|
| 1 | +import onnx |
| 2 | +from onnx import numpy_helper |
| 3 | +import numpy as np |
| 4 | + |
| 5 | +# Filter |
| 6 | +sobel = { |
| 7 | + 3: np.array([[1, 0, -1], |
| 8 | + [2, 0, -2], |
| 9 | + [1, 0, -1]], dtype='float32'), |
| 10 | + 5: np.array([[2, 1, 0, -1, -2], |
| 11 | + [3, 2, 0, -2, -3], |
| 12 | + [4, 3, 0, -3, -4], |
| 13 | + [3, 2, 0, -2, -3], |
| 14 | + [2, 1, 0, -1, -2]], dtype='float32'), |
| 15 | + 7: np.array([[3, 2, 1, 0, -1, -2, -3], |
| 16 | + [4, 3, 2, 0, -2, -3, -4], |
| 17 | + [5, 4, 3, 0, -3, -4, -5], |
| 18 | + [6, 5, 4, 0, -4, -5, -6], |
| 19 | + [5, 4, 3, 0, -3, -4, -5], |
| 20 | + [4, 3, 2, 0, -2, -3, -4], |
| 21 | + [3, 2, 1, 0, -1, -2, -3]], dtype='float32'), |
| 22 | + 9: np.array([[4, 3, 2, 1, 0, -1, -2, -3, -4], |
| 23 | + [5, 4, 3, 2, 0, -2, -3, -4, -5], |
| 24 | + [6, 5, 4, 3, 0, -3, -4, -5, -6], |
| 25 | + [7, 6, 5, 4, 0, -4, -5, -6, -7], |
| 26 | + [8, 7, 6, 5, 0, -5, -6, -7, -8], |
| 27 | + [7, 6, 5, 4, 0, -4, -5, -6, -7], |
| 28 | + [6, 5, 4, 3, 0, -3, -4, -5, -6], |
| 29 | + [5, 4, 3, 2, 0, -2, -3, -4, -5], |
| 30 | + [4, 3, 2, 1, 0, -1, -2, -3, -4]], dtype='float32') |
| 31 | +} |
| 32 | + |
| 33 | +def get_output_shape(i): |
| 34 | + if i == 3: |
| 35 | + return [1, 1, 2046, 2046] |
| 36 | + elif i == 5: |
| 37 | + return [1, 1, 2044, 2044] |
| 38 | + elif i == 7: |
| 39 | + return [1, 1, 2042, 2042] |
| 40 | + elif i == 9: |
| 41 | + return [1, 1, 2040, 2040] |
| 42 | + |
| 43 | +def main(): |
| 44 | + for i in range(3, 10, 2): |
| 45 | + # Filter |
| 46 | + w = sobel[i].reshape((1, 1, i, i)) |
| 47 | + |
| 48 | + # Input |
| 49 | + x = np.random.rand(1, 1, 2048, 2048).astype('float32') |
| 50 | + |
| 51 | + # Initializer of the weight |
| 52 | + initializer_w = numpy_helper.from_array(w, 'w') |
| 53 | + |
| 54 | + tensor_w = onnx.helper.make_tensor_value_info('w', onnx.TensorProto.FLOAT, [1, 1, i, i]) |
| 55 | + tensor_x = onnx.helper.make_tensor_value_info('x', onnx.TensorProto.FLOAT, [1, 1, 2048, 2048]) |
| 56 | + tensor_y = onnx.helper.make_tensor_value_info('y', onnx.TensorProto.FLOAT, get_output_shape(i)) |
| 57 | + |
| 58 | + # Create a node |
| 59 | + node_def = onnx.helper.make_node( |
| 60 | + 'Conv', |
| 61 | + inputs=['x', 'w'], |
| 62 | + outputs=['y'], |
| 63 | + kernel_shape=[i, i] |
| 64 | + ) |
| 65 | + |
| 66 | + # Create the graph |
| 67 | + graph_def = onnx.helper.make_graph( |
| 68 | + [node_def], |
| 69 | + f'conv_{i}x{i}', |
| 70 | + [tensor_x], |
| 71 | + [tensor_y], |
| 72 | + [initializer_w] |
| 73 | + ) |
| 74 | + |
| 75 | + # Create the model |
| 76 | + model_def = onnx.helper.make_model(graph_def, |
| 77 | + producer_name='python_script', |
| 78 | + ir_version=6 |
| 79 | + ) |
| 80 | + model_def.opset_import[0].version = 10 |
| 81 | + |
| 82 | + # Check the model |
| 83 | + onnx.checker.check_model(model_def) |
| 84 | + |
| 85 | + # Save the model |
| 86 | + onnx.save(model_def, f'conv_{i}x{i}.onnx') |
| 87 | + |
| 88 | +if __name__ == "__main__": |
| 89 | + main() |
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