upload int8 onnx models

Signed-off-by: Mengni Wang <mengni.wang@intel.com>

README.md

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 ---
 license: mit
+tags:
+- table-transformer
+- table detection
+- table structure recognition
+- int8
+- Intel® Neural Compressor
+- neural-compressor
+- PostTrainingStatic
+- onnx
+datasets:
+- bsmock/pubtables-1m
 ---
+# INT8 Table Transformer
+
+##  Post-training static quantization
+
+### ONNX
+
+This repo contains the models for:
+
+1) Table detection,
+2) Table structure recognition,
+
+The original FP32 PyTorch model comes from [bsmock/tatr-pubtables1m-v1.0](https://huggingface.co/bsmock/tatr-pubtables1m-v1.0). The INT8 ONNX models are quantized with [Intel® Neural Compressor](https://github.com/intel/neural-compressor). 
+
+Refer to this [link](https://github.com/intel/neural-compressor/tree/master/examples/onnxrt/object_detection/table_transformer/quantization/ptq_static) for model preparation, quantization and benchmark scripts.
+
+#### Test result
+
+Table detection:
+
+|   |INT8|FP32|
+|---|:---:|:---:|
+| **COCO metrics (AP)** |0.9691|0.9706|
+| **Model size (MB)**  |56|111|
+
+Table structure recognition：
+|   |INT8|FP32|
+|---|:---:|:---:|
+| **Model size (MB)**  |56|111|

pubtables1m_detection_detr_r18_static_int8.onnx

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pubtables1m_structure_detr_r18_static_int8.onnx

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