Delete model-inference.js
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model-inference.js
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/**
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* Model inference module using ONNX Runtime Web
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*/
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class ModelInference {
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constructor() {
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this.session = null;
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this.isModelLoaded = false;
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this.isInferring = false;
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this.modelPath = 'models/card_segmentation.onnx';
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// Model specifications
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this.inputHeight = 320;
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this.inputWidth = 240;
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this.numClasses = 2;
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// GPU acceleration info
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this.accelerationInfo = {
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activeProvider: 'unknown',
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availableProviders: [],
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gpuInfo: null,
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supportsWebGL: false,
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supportsWebGPU: false
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};
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// Performance tracking
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this.inferenceStats = {
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totalInferences: 0,
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totalTime: 0,
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averageTime: 0,
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lastInferenceTime: 0
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};
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}
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/**
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* Initialize ONNX Runtime and load the model with GPU acceleration
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* @returns {Promise<boolean>}
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*/
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async initialize() {
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try {
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console.log('Initializing ONNX Runtime with GPU acceleration...');
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// Configure ONNX Runtime
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ort.env.wasm.wasmPaths = 'https://cdn.jsdelivr.net/npm/onnxruntime-web@1.22.0/dist/';
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ort.env.wasm.numThreads = 1; // Single thread for stability
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// Detect GPU capabilities
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await this.detectGPUCapabilities();
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// Determine optimal execution providers
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const executionProviders = this.getOptimalExecutionProviders();
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console.log('Attempting to load model with providers:', executionProviders);
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console.log(`Loading model from: ${this.modelPath}`);
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// Try to load model with optimal providers
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this.session = await this.loadModelWithFallback(executionProviders);
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console.log(`Model loaded successfully with provider: ${this.accelerationInfo.activeProvider}`);
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this.isModelLoaded = true;
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// Log model and acceleration information
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this.logModelInfo();
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this.logAccelerationInfo();
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return true;
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} catch (error) {
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console.error('Failed to initialize model:', error);
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this.isModelLoaded = false;
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throw new Error(`Model initialization failed: ${error.message}`);
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}
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}
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/**
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* Detect GPU capabilities and available acceleration
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*/
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async detectGPUCapabilities() {
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console.log('Detecting GPU capabilities...');
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// Check WebGL support
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this.accelerationInfo.supportsWebGL = this.checkWebGLSupport();
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// Check WebGPU support
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this.accelerationInfo.supportsWebGPU = await this.checkWebGPUSupport();
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// Get GPU info if available
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if (this.accelerationInfo.supportsWebGL) {
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this.accelerationInfo.gpuInfo = this.getWebGLInfo();
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}
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console.log('GPU Capabilities:', {
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WebGL: this.accelerationInfo.supportsWebGL,
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WebGPU: this.accelerationInfo.supportsWebGPU,
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GPU: this.accelerationInfo.gpuInfo
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});
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}
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/**
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* Check WebGL support
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* @returns {boolean}
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*/
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checkWebGLSupport() {
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try {
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const canvas = document.createElement('canvas');
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const gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
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return !!gl;
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} catch (error) {
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console.warn('WebGL check failed:', error);
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return false;
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}
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}
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/**
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* Check WebGPU support
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* @returns {Promise<boolean>}
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*/
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async checkWebGPUSupport() {
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try {
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if (!navigator.gpu) {
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return false;
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}
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const adapter = await navigator.gpu.requestAdapter();
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return !!adapter;
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} catch (error) {
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console.warn('WebGPU check failed:', error);
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return false;
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}
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}
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/**
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* Get WebGL renderer information
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* @returns {Object|null}
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*/
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getWebGLInfo() {
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try {
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const canvas = document.createElement('canvas');
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const gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
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if (!gl) return null;
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const debugInfo = gl.getExtension('WEBGL_debug_renderer_info');
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return {
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vendor: debugInfo ? gl.getParameter(debugInfo.UNMASKED_VENDOR_WEBGL) : gl.getParameter(gl.VENDOR),
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renderer: debugInfo ? gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL) : gl.getParameter(gl.RENDERER),
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version: gl.getParameter(gl.VERSION),
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shadingLanguageVersion: gl.getParameter(gl.SHADING_LANGUAGE_VERSION)
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};
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} catch (error) {
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console.warn('Failed to get WebGL info:', error);
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return null;
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}
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}
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/**
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* Determine optimal execution providers based on capabilities
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* @returns {Array<string>}
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*/
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getOptimalExecutionProviders() {
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const providers = [];
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// Prioritize WebGPU first for best performance
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if (this.accelerationInfo.supportsWebGPU) {
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providers.push('webgpu');
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this.accelerationInfo.availableProviders.push('webgpu');
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}
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// Fall back to WebGL if WebGPU is not available or fails
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if (this.accelerationInfo.supportsWebGL) {
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providers.push('webgl');
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this.accelerationInfo.availableProviders.push('webgl');
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}
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// Always add WASM as final fallback
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providers.push('wasm');
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this.accelerationInfo.availableProviders.push('wasm');
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return providers;
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}
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/**
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* Load model with fallback mechanism
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* @param {Array<string>} executionProviders
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* @returns {Promise<InferenceSession>}
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*/
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async loadModelWithFallback(executionProviders) {
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const baseOptions = {
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enableMemPattern: false,
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enableCpuMemArena: false,
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graphOptimizationLevel: 'all'
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};
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// Try each provider in order
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for (const provider of executionProviders) {
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try {
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console.log(`Attempting to load model with ${provider} provider...`);
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const options = {
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...baseOptions,
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executionProviders: [provider]
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};
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const session = await ort.InferenceSession.create(this.modelPath, options);
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this.accelerationInfo.activeProvider = provider;
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console.log(`✓ Successfully loaded with ${provider} provider`);
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return session;
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} catch (error) {
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const errorMsg = error.message;
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// Log specific information for operator compatibility issues
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if (errorMsg.includes('cannot resolve operator')) {
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const operatorName = errorMsg.match(/operator '(\w+)'/)?.[1] || 'unknown';
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console.warn(`✗ ${provider.toUpperCase()} provider doesn't support operator '${operatorName}' - falling back to next provider`);
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} else {
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console.warn(`✗ Failed to load with ${provider} provider:`, errorMsg);
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}
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// Store failed provider info for reporting
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this.accelerationInfo[`${provider}Error`] = errorMsg;
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continue;
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}
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}
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throw new Error('Failed to load model with any execution provider');
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}
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/**
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* Log acceleration information
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*/
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logAccelerationInfo() {
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console.log('=== Acceleration Information ===');
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console.log(`Active Provider: ${this.accelerationInfo.activeProvider}`);
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console.log(`Available Providers: ${this.accelerationInfo.availableProviders.join(', ')}`);
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console.log(`WebGL Support: ${this.accelerationInfo.supportsWebGL}`);
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console.log(`WebGPU Support: ${this.accelerationInfo.supportsWebGPU}`);
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if (this.accelerationInfo.gpuInfo) {
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console.log('GPU Information:');
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console.log(` Vendor: ${this.accelerationInfo.gpuInfo.vendor}`);
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console.log(` Renderer: ${this.accelerationInfo.gpuInfo.renderer}`);
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console.log(` Version: ${this.accelerationInfo.gpuInfo.version}`);
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}
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console.log('===============================');
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}
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/**
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* Get acceleration information
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* @returns {Object}
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*/
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getAccelerationInfo() {
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return { ...this.accelerationInfo };
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}
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/**
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* Log model information for debugging
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*/
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logModelInfo() {
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if (!this.session) return;
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console.log('=== Model Information ===');
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console.log('Input tensors:');
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this.session.inputNames.forEach((name, index) => {
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// Try to access input metadata safely
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try {
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if (this.session.inputs && this.session.inputs[index]) {
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const input = this.session.inputs[index];
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console.log(` ${name}: ${input.dims} (${input.type})`);
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} else {
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console.log(` ${name}: metadata not available`);
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}
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} catch (error) {
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console.log(` ${name}: metadata not available`);
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}
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});
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console.log('Output tensors:');
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this.session.outputNames.forEach((name, index) => {
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// Try to access output metadata safely
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try {
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if (this.session.outputs && this.session.outputs[index]) {
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const output = this.session.outputs[index];
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console.log(` ${name}: ${output.dims} (${output.type})`);
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} else {
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console.log(` ${name}: metadata not available`);
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}
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} catch (error) {
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console.log(` ${name}: metadata not available`);
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}
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});
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console.log('========================');
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}
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/**
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* Run inference on preprocessed image data
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* @param {Float32Array} inputData
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* @returns {Promise<Float32Array>}
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*/
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async runInference(inputData) {
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if (!this.isModelLoaded || !this.session) {
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throw new Error('Model not loaded. Call initialize() first.');
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}
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if (this.isInferring) {
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console.warn('Inference already in progress, skipping...');
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return null;
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}
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try {
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this.isInferring = true;
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const startTime = performance.now();
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// Create input tensor
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const inputTensor = new ort.Tensor('float32', inputData, [1, 3, this.inputHeight, this.inputWidth]);
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// Get input name from model
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const inputName = this.session.inputNames[0];
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// Run inference
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const results = await this.session.run({ [inputName]: inputTensor });
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// Get output tensor
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const outputName = this.session.outputNames[0];
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const outputTensor = results[outputName];
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// Calculate inference time
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const endTime = performance.now();
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const inferenceTime = endTime - startTime;
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// Update statistics
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this.updateInferenceStats(inferenceTime);
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console.log(`Inference completed in ${inferenceTime.toFixed(2)}ms`);
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return outputTensor.data;
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} catch (error) {
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console.error('Inference failed:', error);
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throw new Error(`Inference failed: ${error.message}`);
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| 340 |
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} finally {
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this.isInferring = false;
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}
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}
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| 344 |
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| 345 |
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/**
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* Process video frame and return segmentation mask
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| 347 |
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* @param {HTMLVideoElement} video
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| 348 |
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* @returns {Promise<Object>} - {mask: Uint8Array, stats: Object}
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*/
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async processVideoFrame(video) {
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try {
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| 352 |
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// Check if model is ready
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| 353 |
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if (!this.isModelLoaded) {
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throw new Error('Model not initialized');
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}
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| 356 |
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// Get video dimensions
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const videoWidth = video.videoWidth;
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const videoHeight = video.videoHeight;
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| 360 |
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if (videoWidth === 0 || videoHeight === 0) {
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throw new Error('Video not ready');
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}
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| 364 |
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// Determine if rotation is needed for model input
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const shouldRotateForModel = ImageUtils.shouldRotateForModel(videoWidth, videoHeight);
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| 367 |
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// Preprocess video frame
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const preprocessedData = ImageUtils.preprocessVideoFrame(
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video,
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this.inputWidth,
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this.inputHeight,
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shouldRotateForModel
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);
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// Run inference
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const modelOutput = await this.runInference(preprocessedData);
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| 378 |
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if (!modelOutput) {
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return null; // Inference skipped
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| 381 |
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}
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| 382 |
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| 383 |
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// Process model output to create mask
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| 384 |
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const mask = ImageUtils.processModelOutput(
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modelOutput,
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this.inputHeight,
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this.inputWidth
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);
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return {
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mask: mask,
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shouldRotateBack: shouldRotateForModel,
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stats: this.getInferenceStats()
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};
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} catch (error) {
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console.error('Error processing video frame:', error);
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throw error;
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}
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}
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| 400 |
-
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| 401 |
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/**
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| 402 |
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* Update inference performance statistics
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| 403 |
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* @param {number} inferenceTime
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| 404 |
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*/
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| 405 |
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updateInferenceStats(inferenceTime) {
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| 406 |
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this.inferenceStats.totalInferences++;
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| 407 |
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this.inferenceStats.totalTime += inferenceTime;
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| 408 |
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this.inferenceStats.averageTime = this.inferenceStats.totalTime / this.inferenceStats.totalInferences;
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| 409 |
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this.inferenceStats.lastInferenceTime = inferenceTime;
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| 410 |
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}
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| 411 |
-
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| 412 |
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/**
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| 413 |
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* Get current inference statistics
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| 414 |
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* @returns {Object}
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| 415 |
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*/
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| 416 |
-
getInferenceStats() {
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| 417 |
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return {
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| 418 |
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...this.inferenceStats,
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| 419 |
-
fps: this.inferenceStats.lastInferenceTime > 0 ?
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| 420 |
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1000 / this.inferenceStats.lastInferenceTime : 0
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};
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}
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-
|
| 424 |
-
/**
|
| 425 |
-
* Reset inference statistics
|
| 426 |
-
*/
|
| 427 |
-
resetStats() {
|
| 428 |
-
this.inferenceStats = {
|
| 429 |
-
totalInferences: 0,
|
| 430 |
-
totalTime: 0,
|
| 431 |
-
averageTime: 0,
|
| 432 |
-
lastInferenceTime: 0
|
| 433 |
-
};
|
| 434 |
-
}
|
| 435 |
-
|
| 436 |
-
/**
|
| 437 |
-
* Check if model is ready for inference
|
| 438 |
-
* @returns {boolean}
|
| 439 |
-
*/
|
| 440 |
-
isReady() {
|
| 441 |
-
return this.isModelLoaded && !this.isInferring;
|
| 442 |
-
}
|
| 443 |
-
|
| 444 |
-
/**
|
| 445 |
-
* Get model specifications
|
| 446 |
-
* @returns {Object}
|
| 447 |
-
*/
|
| 448 |
-
getModelSpecs() {
|
| 449 |
-
return {
|
| 450 |
-
inputHeight: this.inputHeight,
|
| 451 |
-
inputWidth: this.inputWidth,
|
| 452 |
-
numClasses: this.numClasses,
|
| 453 |
-
isLoaded: this.isModelLoaded
|
| 454 |
-
};
|
| 455 |
-
}
|
| 456 |
-
|
| 457 |
-
/**
|
| 458 |
-
* Dispose of the model and free resources
|
| 459 |
-
*/
|
| 460 |
-
dispose() {
|
| 461 |
-
if (this.session) {
|
| 462 |
-
this.session.release();
|
| 463 |
-
this.session = null;
|
| 464 |
-
}
|
| 465 |
-
this.isModelLoaded = false;
|
| 466 |
-
this.isInferring = false;
|
| 467 |
-
console.log('Model resources disposed');
|
| 468 |
-
}
|
| 469 |
-
}
|
| 470 |
-
|
| 471 |
-
// Export for use in other modules
|
| 472 |
-
window.ModelInference = ModelInference;
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