ocr/config.pbtxt

name: "ocr"
platform: "ensemble"

input [
    { 
        name: "IMAGE_BYTES" 
        data_type: TYPE_STRING 
        dims: [1]
    }
]
output [
    { 
        name: "TEXT_LIST" 
        data_type: TYPE_STRING 
        dims: [-1] 
    },
    { 
        name: "OCR_BOX_LIST" 
        data_type: TYPE_FP32
        dims: [-1, 4, 2] 
    }
]

ensemble_scheduling {
    step {
        model_name: "ocr_td_preprocess"
        model_version: -1

        input_map { key: "image_bytes" value: "IMAGE_BYTES" }

        output_map { key: "resized_image" value: "resized_image" },
        output_map { key: "resize_ratio" value: "resize_ratio" },
        output_map { key: "original_image" value: "original_image" }
    }
    step {
        model_name: "ocr_td_engine"
        model_version: -1

        input_map { key: "input" value: "resized_image" }

        output_map { key: "output" value: "td_output" }
    }
    step {
        model_name: "ocr_td_postprocess"
        model_version: -1

        input_map { key: "td_output" value: "td_output" },
        input_map { key: "resize_ratio" value: "resize_ratio" }

        output_map { key: "detected_text_box_list" value: "detected_text_box_list" }
    }
    step {
        model_name: "ocr_tr_bls"
        model_version: -1

        input_map { key: "original_image" value: "original_image" },
        input_map { key: "detected_text_box_list" value: "detected_text_box_list" }

        output_map { key: "text_list" value: "TEXT_LIST" },
        output_map { key: "box_list" value: "OCR_BOX_LIST" }
    }
}