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| import csv | |
| import os | |
| import sys | |
| import cv2 | |
| import gradio as gr | |
| import matplotlib.pyplot as plt | |
| import numpy as np | |
| import onnxruntime as ort | |
| from matplotlib import gridspec | |
| ade_palette = [] | |
| labels_list = [] | |
| csv.field_size_limit(sys.maxsize) | |
| with open(r"labels.txt", "r") as fp: | |
| for line in fp: | |
| labels_list.append(line[:-1]) | |
| with open(r"ade_palette.txt", "r") as fp: | |
| for line in fp: | |
| tmp_list = list(map(int, line[:-1].strip("][").split(", "))) | |
| ade_palette.append(tmp_list) | |
| colormap = np.asarray(ade_palette) | |
| model_filename = "segformer-b5-finetuned-ade-640-640.onnx" | |
| sess_options = ort.SessionOptions() | |
| sess_options.intra_op_num_threads = os.cpu_count() | |
| sess = ort.InferenceSession( | |
| model_filename, sess_options, providers=["CPUExecutionProvider"] | |
| ) | |
| def label_to_color_image(label): | |
| if label.ndim != 2: | |
| raise ValueError("Expect 2-D input label") | |
| if np.max(label) >= len(colormap): | |
| raise ValueError("label value too large.") | |
| return colormap[label] | |
| def draw_plot(pred_img, seg): | |
| fig = plt.figure(figsize=(20, 15)) | |
| grid_spec = gridspec.GridSpec(1, 2, width_ratios=[6, 1]) | |
| plt.subplot(grid_spec[0]) | |
| plt.imshow(pred_img) | |
| plt.axis("off") | |
| LABEL_NAMES = np.asarray(labels_list) | |
| FULL_LABEL_MAP = np.arange(len(LABEL_NAMES)).reshape(len(LABEL_NAMES), 1) | |
| FULL_COLOR_MAP = label_to_color_image(FULL_LABEL_MAP) | |
| unique_labels = np.unique(seg) | |
| ax = plt.subplot(grid_spec[1]) | |
| plt.imshow(FULL_COLOR_MAP[unique_labels].astype(np.uint8), interpolation="nearest") | |
| ax.yaxis.tick_right() | |
| plt.yticks(range(len(unique_labels)), LABEL_NAMES[unique_labels]) | |
| plt.xticks([], []) | |
| ax.tick_params(width=0.0, labelsize=25) | |
| return fig | |
| def sepia(input_img): | |
| img = cv2.imread(input_img) | |
| img = cv2.resize(img, (640, 640)).astype(np.float32) | |
| img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB) | |
| img_batch = np.expand_dims(img, axis=0) | |
| img_batch = np.transpose(img_batch, (0, 3, 1, 2)) | |
| logits = sess.run(None, {"pixel_values": img_batch})[0] | |
| logits = np.transpose(logits, (0, 2, 3, 1)) | |
| seg = np.argmax(logits, axis=-1)[0].astype("float32") | |
| seg = cv2.resize(seg, (640, 640)).astype("uint8") | |
| color_seg = np.zeros( | |
| (seg.shape[0], seg.shape[1], 3), dtype=np.uint8 | |
| ) # height, width, 3 | |
| for label, color in enumerate(colormap): | |
| color_seg[seg == label, :] = color | |
| # Convert to BGR | |
| color_seg = color_seg[..., ::-1] | |
| # Show image + mask | |
| pred_img = img * 0.5 + color_seg * 0.5 | |
| pred_img = pred_img.astype(np.uint8) | |
| fig = draw_plot(pred_img, seg) | |
| return fig | |
| title = "SegFormer(ADE20k) in TensorFlow" | |
| description = """ | |
| This is demo TensorFlow SegFormer from 🤗 `transformers` official package. The pre-trained model was trained to segment scene specific images. We are **currently using ONNX model converted from the TensorFlow based SegFormer to improve the latency**. The average latency of an inference is **21** and **8** seconds for TensorFlow and ONNX converted models respectively (in [Colab](https://github.com/deep-diver/segformer-tf-transformers/blob/main/notebooks/TFSegFormer_ONNX.ipynb)). Check out the [repository](https://github.com/deep-diver/segformer-tf-transformers) to find out how to make inference, finetune the model with custom dataset, and further information. | |
| """ | |
| demo = gr.Interface( | |
| sepia, | |
| gr.inputs.Image(type="filepath"), | |
| outputs=["plot"], | |
| examples=["ADE_val_00000001.jpeg"], | |
| allow_flagging="never", | |
| title=title, | |
| description=description, | |
| ) | |
| demo.launch() | |