Upload fade_transition.ipynb

fade_transition.ipynb

@@ -0,0 +1 @@
+{"cells":[{"cell_type":"code","execution_count":null,"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"elapsed":15062,"status":"ok","timestamp":1780339871386,"user":{"displayName":"","userId":""},"user_tz":-120},"id":"IxeXIbZXVbiw","outputId":"efbbf2bc-324f-46ca-de33-e08b27fabfc9"},"outputs":[{"output_type":"stream","name":"stdout","text":["Mounted at /content/drive\n"]}],"source":["from google.colab import drive\n","drive.mount('/content/drive')"]},{"cell_type":"code","execution_count":null,"metadata":{"cellView":"form","colab":{"base_uri":"https://localhost:8080/"},"id":"FhLOsdQReRhJ","executionInfo":{"status":"ok","timestamp":1780339904468,"user_tz":-120,"elapsed":18498,"user":{"displayName":"","userId":""}},"outputId":"b82f3f85-ec93-4d4e-dca4-336cdf8e721d"},"outputs":[{"output_type":"stream","name":"stdout","text":["Read 62 images from /content/drive/MyDrive/to_add.zip\n","Saved IMG_5425.WEBP -> padded_001.webp\n","Saved IMG_5394.WEBP -> padded_002.webp\n","Saved IMG_5384.WEBP -> padded_003.webp\n","Saved IMG_5374.WEBP -> padded_004.webp\n","Saved IMG_5395.WEBP -> padded_005.webp\n","Saved IMG_5378.WEBP -> padded_006.webp\n","Saved IMG_5415.WEBP -> padded_007.webp\n","Saved IMG_5367.WEBP -> padded_008.webp\n","Saved IMG_5380.WEBP -> padded_009.webp\n","Saved IMG_5381.WEBP -> padded_010.webp\n","Saved IMG_5403.WEBP -> padded_011.webp\n","Saved IMG_5389.WEBP -> padded_012.webp\n","Saved IMG_5392.WEBP -> padded_013.webp\n","Saved IMG_5419.JPG -> padded_014.jpg\n","Saved IMG_5411.JPG -> padded_015.jpg\n","Saved IMG_5365.WEBP -> padded_016.webp\n","Saved IMG_5423.JPG -> padded_017.jpg\n","Saved IMG_5418.JPG -> padded_018.jpg\n","Saved IMG_5386.WEBP -> padded_019.webp\n","Saved IMG_5382.WEBP -> padded_020.webp\n","Saved IMG_5385.WEBP -> padded_021.webp\n","Saved IMG_5424.JPG -> padded_022.jpg\n","Saved IMG_5426.WEBP -> padded_023.webp\n","Saved IMG_5400.WEBP -> padded_024.webp\n","Saved IMG_5402.WEBP -> padded_025.webp\n","Saved IMG_5405.JPG -> padded_026.jpg\n","Saved IMG_5376.WEBP -> padded_027.webp\n","Saved IMG_5407.JPG -> padded_028.jpg\n","Saved IMG_5420.JPG -> padded_029.jpg\n","Saved IMG_5396.JPG -> padded_030.jpg\n","Saved IMG_5383.WEBP -> padded_031.webp\n","Saved IMG_5410.JPG -> padded_032.jpg\n","Saved IMG_5404.WEBP -> padded_033.webp\n","Saved IMG_5373.WEBP -> padded_034.webp\n","Saved IMG_5406.JPG -> padded_035.jpg\n","Saved IMG_5414.JPG -> padded_036.jpg\n","Saved IMG_5375.WEBP -> padded_037.webp\n","Saved IMG_5408.JPG -> padded_038.jpg\n","Saved IMG_5390.JPG -> padded_039.jpg\n","Saved IMG_5371.WEBP -> padded_040.webp\n","Saved IMG_5379.WEBP -> padded_041.webp\n","Saved IMG_5422.JPG -> padded_042.jpg\n","Saved IMG_5387.WEBP -> padded_043.webp\n","Saved IMG_5398.WEBP -> padded_044.webp\n","Saved IMG_5417.WEBP -> padded_045.webp\n","Saved IMG_5399.WEBP -> padded_046.webp\n","Saved IMG_5393.WEBP -> padded_047.webp\n","Saved IMG_5391.WEBP -> padded_048.webp\n","Saved IMG_5416.WEBP -> padded_049.webp\n","Saved IMG_5409.JPG -> padded_050.jpg\n","Saved IMG_5388.WEBP -> padded_051.webp\n","Saved IMG_5413.WEBP -> padded_052.webp\n","Saved IMG_5369.WEBP -> padded_053.webp\n","Saved IMG_5401.WEBP -> padded_054.webp\n","Saved IMG_5368.WEBP -> padded_055.webp\n","Saved IMG_5370.WEBP -> padded_056.webp\n","Saved IMG_5421.JPG -> padded_057.jpg\n","Saved IMG_5412.JPG -> padded_058.jpg\n","Saved IMG_5377.WEBP -> padded_059.webp\n","Saved IMG_5366.WEBP -> padded_060.webp\n","Saved IMG_5372.WEBP -> padded_061.webp\n","Saved IMG_5397.jpg -> padded_062.jpg\n","\n","Processed: 62 images\n","\n","Zip saved to: /content/drive/MyDrive/to_add_left.zip\n"]}],"source":["import numpy as np\n","import zipfile\n","import os\n","import io\n","import shutil\n","\n","from google.colab import files\n","from PIL import Image\n","\n","TARGET_SIZE = 1024\n","BG_COLOR = \"#181818\"\n","EDGE_STRIP = 10\n","\n","FADE_MAX_WIDTH = 80 #@param {type:\"slider\", min:0, max:1024, step:10}\n","\n","VERTICAL_BIAS = \"right\" #@param [\"left\", \"center\", \"right\"]\n","\n","DOWNLOAD_ZIP = False #@param {type:\"boolean\"}\n","\n","READ_FROM_ZIP = True #@param {type:\"boolean\"}\n","INPUT_ZIP_FILEPATH = \"/content/drive/MyDrive/to_add.zip\" #@param {type:\"string\"}\n","\n","SAVE_TO_ZIP = True #@param {type:\"boolean\"}\n","OUTPUT_ZIP_FILEPATH = \"/content/drive/MyDrive/to_add_left.zip\" #@param {type:\"string\"}\n","\n","\n","def hex_to_rgb(hex_color):\n","    hex_color = hex_color.lstrip(\"#\")\n","\n","    return np.array(\n","        [int(hex_color[i:i+2], 16) for i in (0, 2, 4)],\n","        dtype=np.float32\n","    )\n","\n","\n","def apply_horizontal_fade(\n","    canvas,\n","    resized_np,\n","    pad_y,\n","    new_h,\n","    pad_left,\n","    pad_right,\n","    bg_rgb,\n","    fade_width\n","):\n","\n","    h, w, _ = resized_np.shape\n","\n","    if pad_left > 0:\n","\n","        left_fade = min(fade_width, pad_left)\n","\n","        strip_w = min(EDGE_STRIP, w)\n","\n","        left_strip = resized_np[:, :strip_w]\n","\n","        solid_width = pad_left - left_fade\n","\n","        if solid_width > 0:\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                :solid_width\n","            ] = bg_rgb\n","\n","        for x in range(left_fade):\n","\n","            canvas_x = solid_width + x\n","\n","            progress = (x + 1) / max(left_fade, 1)\n","\n","            sample_x = int(\n","                (x / max(left_fade - 1, 1)) * (strip_w - 1)\n","            )\n","\n","            sample_col = left_strip[:, sample_x:sample_x+1]\n","\n","            blended = (\n","                progress * sample_col +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                canvas_x:canvas_x+1\n","            ] = blended\n","\n","    if pad_right > 0:\n","\n","        right_fade = min(fade_width, pad_right)\n","\n","        strip_w = min(EDGE_STRIP, w)\n","\n","        right_strip = resized_np[:, -strip_w:]\n","\n","        solid_width = pad_right - right_fade\n","\n","        fade_start = pad_left + w\n","\n","        for x in range(right_fade):\n","\n","            canvas_x = fade_start + x\n","\n","            progress = 1.0 - ((x + 1) / max(right_fade, 1))\n","\n","            sample_x = int(\n","                (x / max(right_fade - 1, 1)) * (strip_w - 1)\n","            )\n","\n","            sample_col = right_strip[:, sample_x:sample_x+1]\n","\n","            blended = (\n","                progress * sample_col +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                canvas_x:canvas_x+1\n","            ] = blended\n","\n","        if solid_width > 0:\n","\n","            solid_start = fade_start + right_fade\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                solid_start:solid_start+solid_width\n","            ] = bg_rgb\n","\n","\n","def apply_vertical_fade(\n","    canvas,\n","    resized_np,\n","    pad_x,\n","    new_w,\n","    pad_top,\n","    pad_bottom,\n","    bg_rgb,\n","    fade_width\n","):\n","\n","    h, w, _ = resized_np.shape\n","\n","    if pad_top > 0:\n","\n","        top_fade = min(fade_width, pad_top)\n","\n","        strip_h = min(EDGE_STRIP, h)\n","\n","        top_strip = resized_np[:strip_h, :]\n","\n","        solid_height = pad_top - top_fade\n","\n","        if solid_height > 0:\n","\n","            canvas[\n","                :solid_height,\n","                pad_x:pad_x+new_w\n","            ] = bg_rgb\n","\n","        for y in range(top_fade):\n","\n","            canvas_y = solid_height + y\n","\n","            progress = (y + 1) / max(top_fade, 1)\n","\n","            sample_y = int(\n","                (y / max(top_fade - 1, 1)) * (strip_h - 1)\n","            )\n","\n","            sample_row = top_strip[sample_y:sample_y+1, :]\n","\n","            blended = (\n","                progress * sample_row +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                canvas_y:canvas_y+1,\n","                pad_x:pad_x+new_w\n","            ] = blended\n","\n","    if pad_bottom > 0:\n","\n","        bottom_fade = min(fade_width, pad_bottom)\n","\n","        strip_h = min(EDGE_STRIP, h)\n","\n","        bottom_strip = resized_np[-strip_h:, :]\n","\n","        solid_height = pad_bottom - bottom_fade\n","\n","        fade_start = pad_top + h\n","\n","        for y in range(bottom_fade):\n","\n","            canvas_y = fade_start + y\n","\n","            progress = 1.0 - ((y + 1) / max(bottom_fade, 1))\n","\n","            sample_y = int(\n","                (y / max(bottom_fade - 1, 1)) * (strip_h - 1)\n","            )\n","\n","            sample_row = bottom_strip[sample_y:sample_y+1, :]\n","\n","            blended = (\n","                progress * sample_row +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                canvas_y:canvas_y+1,\n","                pad_x:pad_x+new_w\n","            ] = blended\n","\n","        if solid_height > 0:\n","\n","            solid_start = fade_start + bottom_fade\n","\n","            canvas[\n","                solid_start:solid_start+solid_height,\n","                pad_x:pad_x+new_w\n","            ] = bg_rgb\n","\n","\n","def create_stretch_fade_padding(\n","    img,\n","    target_size=TARGET_SIZE,\n","    bg_color=BG_COLOR,\n","    fade_max_width=FADE_MAX_WIDTH\n","):\n","\n","    if img.mode != \"RGB\":\n","        img = img.convert(\"RGB\")\n","\n","    bg_rgb = hex_to_rgb(bg_color)\n","\n","    orig_w, orig_h = img.size\n","\n","    if max(orig_w, orig_h) < target_size:\n","\n","        scale = target_size / max(orig_w, orig_h)\n","\n","        orig_w = int(round(orig_w * scale))\n","        orig_h = int(round(orig_h * scale))\n","\n","        img = img.resize(\n","            (orig_w, orig_h),\n","            Image.Resampling.LANCZOS\n","        )\n","\n","    longest_side = max(orig_w, orig_h)\n","\n","    scale = target_size / longest_side\n","\n","    new_w = int(round(orig_w * scale))\n","    new_h = int(round(orig_h * scale))\n","\n","    new_w = min(new_w, target_size)\n","    new_h = min(new_h, target_size)\n","\n","    resized = img.resize(\n","        (new_w, new_h),\n","        Image.Resampling.LANCZOS\n","    )\n","\n","    resized_np = np.array(resized).astype(np.float32)\n","\n","    canvas = np.ones(\n","        (target_size, target_size, 3),\n","        dtype=np.float32\n","    ) * bg_rgb\n","\n","    if orig_h > orig_w:\n","\n","        remaining_x = target_size - new_w\n","\n","        if VERTICAL_BIAS == \"left\":\n","\n","            pad_left = 0\n","            pad_right = remaining_x\n","\n","        elif VERTICAL_BIAS == \"right\":\n","\n","            pad_left = remaining_x\n","            pad_right = 0\n","\n","        else:\n","\n","            pad_left = remaining_x // 2\n","            pad_right = remaining_x - pad_left\n","\n","        pad_y = (target_size - new_h) // 2\n","\n","        canvas[\n","            pad_y:pad_y+new_h,\n","            pad_left:pad_left+new_w\n","        ] = resized_np\n","\n","        apply_horizontal_fade(\n","            canvas,\n","            resized_np,\n","            pad_y,\n","            new_h,\n","            pad_left,\n","            pad_right,\n","            bg_rgb,\n","            fade_max_width\n","        )\n","\n","    else:\n","\n","        pad_x = (target_size - new_w) // 2\n","\n","        remaining_y = target_size - new_h\n","\n","        pad_top = remaining_y // 2\n","        pad_bottom = remaining_y - pad_top\n","\n","        canvas[\n","            pad_top:pad_top+new_h,\n","            pad_x:pad_x+new_w\n","        ] = resized_np\n","\n","        apply_vertical_fade(\n","            canvas,\n","            resized_np,\n","            pad_x,\n","            new_w,\n","            pad_top,\n","            pad_bottom,\n","            bg_rgb,\n","            fade_max_width\n","        )\n","\n","    canvas = np.clip(canvas, 0, 255).astype(np.uint8)\n","\n","    return Image.fromarray(canvas)\n","\n","\n","if READ_FROM_ZIP:\n","\n","    if not os.path.exists(INPUT_ZIP_FILEPATH):\n","        raise FileNotFoundError(\n","            f\"Input zip file not found at: {INPUT_ZIP_FILEPATH}\"\n","        )\n","\n","    temp_extract_dir = \"/content/temp_input_images\"\n","\n","    os.makedirs(temp_extract_dir, exist_ok=True)\n","\n","    try:\n","\n","        with zipfile.ZipFile(INPUT_ZIP_FILEPATH, 'r') as zf:\n","            zf.extractall(temp_extract_dir)\n","\n","        uploaded_files_data = {}\n","\n","        for root, _, files_in_zip_dir in os.walk(temp_extract_dir):\n","\n","            for filename_in_zip in files_in_zip_dir:\n","\n","                if (\n","                    filename_in_zip.startswith('.')\n","                    or \"__MACOSX\" in root\n","                ):\n","                    continue\n","\n","                filepath = os.path.join(root, filename_in_zip)\n","\n","                if os.path.isfile(filepath):\n","\n","                    if any(\n","                        filepath.lower().endswith(ext)\n","                        for ext in [\n","                            \".jpg\",\n","                            \".jpeg\",\n","                            \".png\",\n","                            \".webp\",\n","                            \".gif\",\n","                            \".bmp\",\n","                            \".tiff\"\n","                        ]\n","                    ):\n","\n","                        with open(filepath, 'rb') as f:\n","\n","                            uploaded_files_data[\n","                                filename_in_zip\n","                            ] = f.read()\n","\n","        uploaded = uploaded_files_data\n","\n","        print(\n","            f\"Read {len(uploaded)} images from \"\n","            f\"{INPUT_ZIP_FILEPATH}\"\n","        )\n","\n","        if not uploaded:\n","\n","            print(\n","                f\"No image files found in \"\n","                f\"'{INPUT_ZIP_FILEPATH}' after extraction.\"\n","            )\n","\n","    finally:\n","\n","        if os.path.exists(temp_extract_dir):\n","            shutil.rmtree(temp_extract_dir)\n","\n","else:\n","\n","    print(\"Please upload image files:\")\n","\n","    uploaded = files.upload()\n","\n","\n","output_dir = \"/content/padded_images\"\n","\n","os.makedirs(output_dir, exist_ok=True)\n","\n","processed = 0\n","\n","for i, (filename, content) in enumerate(uploaded.items(), 1):\n","\n","    try:\n","\n","        img = Image.open(io.BytesIO(content))\n","\n","        result = create_stretch_fade_padding(img)\n","\n","        ext = os.path.splitext(filename)[1].lower()\n","\n","        if ext not in [\".jpg\", \".jpeg\", \".png\", \".webp\"]:\n","            ext = \".png\"\n","\n","        new_name = f\"padded_{i:03d}{ext}\"\n","\n","        save_path = os.path.join(output_dir, new_name)\n","\n","        result.save(save_path, quality=95)\n","\n","        print(f\"Saved {filename} -> {new_name}\")\n","\n","        processed += 1\n","\n","    except Exception as e:\n","\n","        print(f\"Failed: {filename}\")\n","        print(e)\n","\n","print(f\"\\nProcessed: {processed} images\")\n","\n","if SAVE_TO_ZIP:\n","    final_zip_path = OUTPUT_ZIP_FILEPATH\n","else:\n","    final_zip_path = \"/content/padded_images.zip\"\n","\n","with zipfile.ZipFile(\n","    final_zip_path,\n","    \"w\",\n","    zipfile.ZIP_DEFLATED\n",") as z:\n","\n","    for f in os.listdir(output_dir):\n","\n","        z.write(\n","            os.path.join(output_dir, f),\n","            f\n","        )\n","\n","print(f\"\\nZip saved to: {final_zip_path}\")\n","\n","if DOWNLOAD_ZIP:\n","    files.download(final_zip_path)"]},{"cell_type":"code","execution_count":null,"metadata":{"colab":{"background_save":true,"base_uri":"https://localhost:8080/"},"id":"02peun9thRnN","outputId":"a1818bbf-eb1a-4cc5-f562-017f29ef8c61"},"outputs":[{"output_type":"stream","name":"stdout","text":["Read 62 images from /content/drive/MyDrive/to_add.zip\n","Saved IMG_5425.WEBP -> padded_001.webp\n","Saved IMG_5394.WEBP -> padded_002.webp\n","Saved IMG_5384.WEBP -> padded_003.webp\n","Saved IMG_5374.WEBP -> padded_004.webp\n","Saved IMG_5395.WEBP -> padded_005.webp\n","Saved IMG_5378.WEBP -> padded_006.webp\n","Saved IMG_5415.WEBP -> padded_007.webp\n","Saved IMG_5367.WEBP -> padded_008.webp\n","Saved IMG_5380.WEBP -> padded_009.webp\n","Saved IMG_5381.WEBP -> padded_010.webp\n","Saved IMG_5403.WEBP -> padded_011.webp\n","Saved IMG_5389.WEBP -> padded_012.webp\n","Saved IMG_5392.WEBP -> padded_013.webp\n","Saved IMG_5419.JPG -> padded_014.jpg\n","Saved IMG_5411.JPG -> padded_015.jpg\n","Saved IMG_5365.WEBP -> padded_016.webp\n","Saved IMG_5423.JPG -> padded_017.jpg\n","Saved IMG_5418.JPG -> padded_018.jpg\n","Saved IMG_5386.WEBP -> padded_019.webp\n","Saved IMG_5382.WEBP -> padded_020.webp\n","Saved IMG_5385.WEBP -> padded_021.webp\n","Saved IMG_5424.JPG -> padded_022.jpg\n","Saved IMG_5426.WEBP -> padded_023.webp\n","Saved IMG_5400.WEBP -> padded_024.webp\n","Saved IMG_5402.WEBP -> padded_025.webp\n","Saved IMG_5405.JPG -> padded_026.jpg\n","Saved IMG_5376.WEBP -> padded_027.webp\n","Saved IMG_5407.JPG -> padded_028.jpg\n","Saved IMG_5420.JPG -> padded_029.jpg\n","Saved IMG_5396.JPG -> padded_030.jpg\n","Saved IMG_5383.WEBP -> padded_031.webp\n","Saved IMG_5410.JPG -> padded_032.jpg\n","Saved IMG_5404.WEBP -> padded_033.webp\n","Saved IMG_5373.WEBP -> padded_034.webp\n","Saved IMG_5406.JPG -> padded_035.jpg\n","Saved IMG_5414.JPG -> padded_036.jpg\n","Saved IMG_5375.WEBP -> padded_037.webp\n","Saved IMG_5408.JPG -> padded_038.jpg\n","Saved IMG_5390.JPG -> padded_039.jpg\n","Saved IMG_5371.WEBP -> padded_040.webp\n","Saved IMG_5379.WEBP -> padded_041.webp\n","Saved IMG_5422.JPG -> padded_042.jpg\n","Saved IMG_5387.WEBP -> padded_043.webp\n","Saved IMG_5398.WEBP -> padded_044.webp\n","Saved IMG_5417.WEBP -> padded_045.webp\n","Saved IMG_5399.WEBP -> padded_046.webp\n","Saved IMG_5393.WEBP -> padded_047.webp\n","Saved IMG_5391.WEBP -> padded_048.webp\n","Saved IMG_5416.WEBP -> padded_049.webp\n","Saved IMG_5409.JPG -> padded_050.jpg\n","Saved IMG_5388.WEBP -> padded_051.webp\n","Saved IMG_5413.WEBP -> padded_052.webp\n","Saved IMG_5369.WEBP -> padded_053.webp\n","Saved IMG_5401.WEBP -> padded_054.webp\n"]}],"source":["import numpy as np\n","import zipfile\n","import os\n","import io\n","import shutil\n","\n","from google.colab import files\n","from PIL import Image\n","\n","TARGET_SIZE = 1024\n","BG_COLOR = \"#181818\"\n","EDGE_STRIP = 10\n","\n","FADE_MAX_WIDTH = 80 #@param {type:\"slider\", min:0, max:1024, step:10}\n","\n","VERTICAL_BIAS = \"left\" #@param [\"left\", \"center\", \"right\"]\n","\n","DOWNLOAD_ZIP = False #@param {type:\"boolean\"}\n","\n","READ_FROM_ZIP = True #@param {type:\"boolean\"}\n","INPUT_ZIP_FILEPATH = \"/content/drive/MyDrive/to_add.zip\" #@param {type:\"string\"}\n","\n","SAVE_TO_ZIP = True #@param {type:\"boolean\"}\n","OUTPUT_ZIP_FILEPATH = \"/content/drive/MyDrive/to_add_right.zip\" #@param {type:\"string\"}\n","\n","\n","def hex_to_rgb(hex_color):\n","    hex_color = hex_color.lstrip(\"#\")\n","\n","    return np.array(\n","        [int(hex_color[i:i+2], 16) for i in (0, 2, 4)],\n","        dtype=np.float32\n","    )\n","\n","\n","def apply_horizontal_fade(\n","    canvas,\n","    resized_np,\n","    pad_y,\n","    new_h,\n","    pad_left,\n","    pad_right,\n","    bg_rgb,\n","    fade_width\n","):\n","\n","    h, w, _ = resized_np.shape\n","\n","    if pad_left > 0:\n","\n","        left_fade = min(fade_width, pad_left)\n","\n","        strip_w = min(EDGE_STRIP, w)\n","\n","        left_strip = resized_np[:, :strip_w]\n","\n","        solid_width = pad_left - left_fade\n","\n","        if solid_width > 0:\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                :solid_width\n","            ] = bg_rgb\n","\n","        for x in range(left_fade):\n","\n","            canvas_x = solid_width + x\n","\n","            progress = (x + 1) / max(left_fade, 1)\n","\n","            sample_x = int(\n","                (x / max(left_fade - 1, 1)) * (strip_w - 1)\n","            )\n","\n","            sample_col = left_strip[:, sample_x:sample_x+1]\n","\n","            blended = (\n","                progress * sample_col +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                canvas_x:canvas_x+1\n","            ] = blended\n","\n","    if pad_right > 0:\n","\n","        right_fade = min(fade_width, pad_right)\n","\n","        strip_w = min(EDGE_STRIP, w)\n","\n","        right_strip = resized_np[:, -strip_w:]\n","\n","        solid_width = pad_right - right_fade\n","\n","        fade_start = pad_left + w\n","\n","        for x in range(right_fade):\n","\n","            canvas_x = fade_start + x\n","\n","            progress = 1.0 - ((x + 1) / max(right_fade, 1))\n","\n","            sample_x = int(\n","                (x / max(right_fade - 1, 1)) * (strip_w - 1)\n","            )\n","\n","            sample_col = right_strip[:, sample_x:sample_x+1]\n","\n","            blended = (\n","                progress * sample_col +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                canvas_x:canvas_x+1\n","            ] = blended\n","\n","        if solid_width > 0:\n","\n","            solid_start = fade_start + right_fade\n","\n","            canvas[\n","                pad_y:pad_y+new_h,\n","                solid_start:solid_start+solid_width\n","            ] = bg_rgb\n","\n","\n","def apply_vertical_fade(\n","    canvas,\n","    resized_np,\n","    pad_x,\n","    new_w,\n","    pad_top,\n","    pad_bottom,\n","    bg_rgb,\n","    fade_width\n","):\n","\n","    h, w, _ = resized_np.shape\n","\n","    if pad_top > 0:\n","\n","        top_fade = min(fade_width, pad_top)\n","\n","        strip_h = min(EDGE_STRIP, h)\n","\n","        top_strip = resized_np[:strip_h, :]\n","\n","        solid_height = pad_top - top_fade\n","\n","        if solid_height > 0:\n","\n","            canvas[\n","                :solid_height,\n","                pad_x:pad_x+new_w\n","            ] = bg_rgb\n","\n","        for y in range(top_fade):\n","\n","            canvas_y = solid_height + y\n","\n","            progress = (y + 1) / max(top_fade, 1)\n","\n","            sample_y = int(\n","                (y / max(top_fade - 1, 1)) * (strip_h - 1)\n","            )\n","\n","            sample_row = top_strip[sample_y:sample_y+1, :]\n","\n","            blended = (\n","                progress * sample_row +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                canvas_y:canvas_y+1,\n","                pad_x:pad_x+new_w\n","            ] = blended\n","\n","    if pad_bottom > 0:\n","\n","        bottom_fade = min(fade_width, pad_bottom)\n","\n","        strip_h = min(EDGE_STRIP, h)\n","\n","        bottom_strip = resized_np[-strip_h:, :]\n","\n","        solid_height = pad_bottom - bottom_fade\n","\n","        fade_start = pad_top + h\n","\n","        for y in range(bottom_fade):\n","\n","            canvas_y = fade_start + y\n","\n","            progress = 1.0 - ((y + 1) / max(bottom_fade, 1))\n","\n","            sample_y = int(\n","                (y / max(bottom_fade - 1, 1)) * (strip_h - 1)\n","            )\n","\n","            sample_row = bottom_strip[sample_y:sample_y+1, :]\n","\n","            blended = (\n","                progress * sample_row +\n","                (1.0 - progress) * bg_rgb\n","            )\n","\n","            canvas[\n","                canvas_y:canvas_y+1,\n","                pad_x:pad_x+new_w\n","            ] = blended\n","\n","        if solid_height > 0:\n","\n","            solid_start = fade_start + bottom_fade\n","\n","            canvas[\n","                solid_start:solid_start+solid_height,\n","                pad_x:pad_x+new_w\n","            ] = bg_rgb\n","\n","\n","def create_stretch_fade_padding(\n","    img,\n","    target_size=TARGET_SIZE,\n","    bg_color=BG_COLOR,\n","    fade_max_width=FADE_MAX_WIDTH\n","):\n","\n","    if img.mode != \"RGB\":\n","        img = img.convert(\"RGB\")\n","\n","    bg_rgb = hex_to_rgb(bg_color)\n","\n","    orig_w, orig_h = img.size\n","\n","    if max(orig_w, orig_h) < target_size:\n","\n","        scale = target_size / max(orig_w, orig_h)\n","\n","        orig_w = int(round(orig_w * scale))\n","        orig_h = int(round(orig_h * scale))\n","\n","        img = img.resize(\n","            (orig_w, orig_h),\n","            Image.Resampling.LANCZOS\n","        )\n","\n","    longest_side = max(orig_w, orig_h)\n","\n","    scale = target_size / longest_side\n","\n","    new_w = int(round(orig_w * scale))\n","    new_h = int(round(orig_h * scale))\n","\n","    new_w = min(new_w, target_size)\n","    new_h = min(new_h, target_size)\n","\n","    resized = img.resize(\n","        (new_w, new_h),\n","        Image.Resampling.LANCZOS\n","    )\n","\n","    resized_np = np.array(resized).astype(np.float32)\n","\n","    canvas = np.ones(\n","        (target_size, target_size, 3),\n","        dtype=np.float32\n","    ) * bg_rgb\n","\n","    if orig_h > orig_w:\n","\n","        remaining_x = target_size - new_w\n","\n","        if VERTICAL_BIAS == \"left\":\n","\n","            pad_left = 0\n","            pad_right = remaining_x\n","\n","        elif VERTICAL_BIAS == \"right\":\n","\n","            pad_left = remaining_x\n","            pad_right = 0\n","\n","        else:\n","\n","            pad_left = remaining_x // 2\n","            pad_right = remaining_x - pad_left\n","\n","        pad_y = (target_size - new_h) // 2\n","\n","        canvas[\n","            pad_y:pad_y+new_h,\n","            pad_left:pad_left+new_w\n","        ] = resized_np\n","\n","        apply_horizontal_fade(\n","            canvas,\n","            resized_np,\n","            pad_y,\n","            new_h,\n","            pad_left,\n","            pad_right,\n","            bg_rgb,\n","            fade_max_width\n","        )\n","\n","    else:\n","\n","        pad_x = (target_size - new_w) // 2\n","\n","        remaining_y = target_size - new_h\n","\n","        pad_top = remaining_y // 2\n","        pad_bottom = remaining_y - pad_top\n","\n","        canvas[\n","            pad_top:pad_top+new_h,\n","            pad_x:pad_x+new_w\n","        ] = resized_np\n","\n","        apply_vertical_fade(\n","            canvas,\n","            resized_np,\n","            pad_x,\n","            new_w,\n","            pad_top,\n","            pad_bottom,\n","            bg_rgb,\n","            fade_max_width\n","        )\n","\n","    canvas = np.clip(canvas, 0, 255).astype(np.uint8)\n","\n","    return Image.fromarray(canvas)\n","\n","\n","if READ_FROM_ZIP:\n","\n","    if not os.path.exists(INPUT_ZIP_FILEPATH):\n","        raise FileNotFoundError(\n","            f\"Input zip file not found at: {INPUT_ZIP_FILEPATH}\"\n","        )\n","\n","    temp_extract_dir = \"/content/temp_input_images\"\n","\n","    os.makedirs(temp_extract_dir, exist_ok=True)\n","\n","    try:\n","\n","        with zipfile.ZipFile(INPUT_ZIP_FILEPATH, 'r') as zf:\n","            zf.extractall(temp_extract_dir)\n","\n","        uploaded_files_data = {}\n","\n","        for root, _, files_in_zip_dir in os.walk(temp_extract_dir):\n","\n","            for filename_in_zip in files_in_zip_dir:\n","\n","                if (\n","                    filename_in_zip.startswith('.')\n","                    or \"__MACOSX\" in root\n","                ):\n","                    continue\n","\n","                filepath = os.path.join(root, filename_in_zip)\n","\n","                if os.path.isfile(filepath):\n","\n","                    if any(\n","                        filepath.lower().endswith(ext)\n","                        for ext in [\n","                            \".jpg\",\n","                            \".jpeg\",\n","                            \".png\",\n","                            \".webp\",\n","                            \".gif\",\n","                            \".bmp\",\n","                            \".tiff\"\n","                        ]\n","                    ):\n","\n","                        with open(filepath, 'rb') as f:\n","\n","                            uploaded_files_data[\n","                                filename_in_zip\n","                            ] = f.read()\n","\n","        uploaded = uploaded_files_data\n","\n","        print(\n","            f\"Read {len(uploaded)} images from \"\n","            f\"{INPUT_ZIP_FILEPATH}\"\n","        )\n","\n","        if not uploaded:\n","\n","            print(\n","                f\"No image files found in \"\n","                f\"'{INPUT_ZIP_FILEPATH}' after extraction.\"\n","            )\n","\n","    finally:\n","\n","        if os.path.exists(temp_extract_dir):\n","            shutil.rmtree(temp_extract_dir)\n","\n","else:\n","\n","    print(\"Please upload image files:\")\n","\n","    uploaded = files.upload()\n","\n","\n","output_dir = \"/content/padded_images\"\n","\n","os.makedirs(output_dir, exist_ok=True)\n","\n","processed = 0\n","\n","for i, (filename, content) in enumerate(uploaded.items(), 1):\n","\n","    try:\n","\n","        img = Image.open(io.BytesIO(content))\n","\n","        result = create_stretch_fade_padding(img)\n","\n","        ext = os.path.splitext(filename)[1].lower()\n","\n","        if ext not in [\".jpg\", \".jpeg\", \".png\", \".webp\"]:\n","            ext = \".png\"\n","\n","        new_name = f\"padded_{i:03d}{ext}\"\n","\n","        save_path = os.path.join(output_dir, new_name)\n","\n","        result.save(save_path, quality=95)\n","\n","        print(f\"Saved {filename} -> {new_name}\")\n","\n","        processed += 1\n","\n","    except Exception as e:\n","\n","        print(f\"Failed: {filename}\")\n","        print(e)\n","\n","print(f\"\\nProcessed: {processed} images\")\n","\n","if SAVE_TO_ZIP:\n","    final_zip_path = OUTPUT_ZIP_FILEPATH\n","else:\n","    final_zip_path = \"/content/padded_images.zip\"\n","\n","with zipfile.ZipFile(\n","    final_zip_path,\n","    \"w\",\n","    zipfile.ZIP_DEFLATED\n",") as z:\n","\n","    for f in os.listdir(output_dir):\n","\n","        z.write(\n","            os.path.join(output_dir, f),\n","            f\n","        )\n","\n","print(f\"\\nZip saved to: {final_zip_path}\")\n","\n","if DOWNLOAD_ZIP:\n","    files.download(final_zip_path)"]},{"cell_type":"code","execution_count":null,"metadata":{"id":"a43c3518"},"outputs":[],"source":["DISCONNECT_RUNTIME = True #@param {type:\"boolean\"}\n","\n","if DISCONNECT_RUNTIME:\n","    from google.colab import runtime\n","    runtime.unassign()\n","    print(\"Runtime disconnected.\")\n","else:\n","    print(\"Runtime not disconnected (DISCONNECT_RUNTIME is False).\")"]}],"metadata":{"colab":{"provenance":[{"file_id":"https://huggingface.co/codeShare/FLUX.2-klein-9b-SDNQ-4bit/blob/main/colab_notebooks/utils/fade_transition.ipynb","timestamp":1780339934150},{"file_id":"https://huggingface.co/codeShare/FLUX.2-klein-9b-SDNQ-4bit/blob/main/colab_notebooks/utils/floodfill_background_edits.ipynb","timestamp":1779981150651},{"file_id":"https://huggingface.co/codeShare/FLUX.2-klein-AIO-SDNQ-4bit-dynamic/blob/main/colab_notebooks/post_edit_tools/post_processing_tasks.ipynb","timestamp":1779908978810}]},"kernelspec":{"display_name":"Python 3","name":"python3"},"language_info":{"name":"python"}},"nbformat":4,"nbformat_minor":0}