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dnn/native: add native support for divide

it can be tested with model file generated with below python script: import tensorflow as tf import numpy as np import imageio in_img = imageio.imread('input.jpg') in_img = in_img.astype(np.float32)/255.0 in_data = in_img[np.newaxis, :] x = tf.placeholder(tf.float32, shape=[1, None, None, 3], name='dnn_in') z1 = 2 / x z2 = 1 / z1 z3 = z2 / 0.25 + 0.3 z4 = z3 - x * 1.5 - 0.3 y = tf.identity(z4, name='dnn_out') sess=tf.Session() sess.run(tf.global_variables_initializer()) graph_def = tf.graph_util.convert_variables_to_constants(sess, sess.graph_def, ['dnn_out']) tf.train.write_graph(graph_def, '.', 'image_process.pb', as_text=False) print("image_process.pb generated, please use \ path_to_ffmpeg/tools/python/convert.py to generate image_process.model\n") output = sess.run(y, feed_dict={x: in_data}) imageio.imsave("out.jpg", np.squeeze(output))

Guo, Yejun committed 6 years ago

Commit 8ce9d881 parent 265b5bd4 files · +22 −3Browse files

Unified · Split

4 files
  1. libavfilter/dnn/dnn_backend_native_layer_mathbinary.c +17 −0
  2. libavfilter/dnn/dnn_backend_native_layer_mathbinary.h +1 −0
  3. tools/python/convert_from_tensorflow.py +3 −2
  4. tools/python/convert_header.py +1 −1
libavfilter/dnn/dnn_backend_native_layer_mathbinary.c+17−0
@@ -133,6 +133,23 @@ int dnn_execute_layer_math_binary(DnnOperand *operands, const int32_t *input_ope · 132 unmodified lines
133133 }
134134 }
135135 return 0;
136+ case DMBO_REALDIV:
137+ if (params->input0_broadcast) {
138+ for (int i = 0; i < dims_count; ++i) {
139+ dst[i] = params->v / src[i];
140+ }
141+ } else if (params->input1_broadcast) {
142+ for (int i = 0; i < dims_count; ++i) {
143+ dst[i] = src[i] / params->v;
144+ }
145+ } else {
146+ const DnnOperand *input1 = &operands[input_operand_indexes[1]];
147+ const float *src1 = input1->data;
148+ for (int i = 0; i < dims_count; ++i) {
149+ dst[i] = src[i] / src1[i];
150+ }
151+ }
152+ return 0;
136153 default:
137154 return -1;
138155 }
libavfilter/dnn/dnn_backend_native_layer_mathbinary.h+1−0
@@ -34,6 +34,7 @@ typedef enum { · 33 unmodified lines
3434 DMBO_SUB = 0,
3535 DMBO_ADD = 1,
3636 DMBO_MUL = 2,
37+ DMBO_REALDIV = 3,
3738 DMBO_COUNT
3839 } DNNMathBinaryOperation;
3940
tools/python/convert_from_tensorflow.py+3−2
@@ -71,7 +71,7 @@ class TFConverter: · 70 unmodified lines
7171 self.conv2d_scope_names = set()
7272 self.conv2d_scopename_inputname_dict = {}
7373 self.op2code = {'Conv2D':1, 'DepthToSpace':2, 'MirrorPad':3, 'Maximum':4, 'MathBinary':5}
74− self.mathbin2code = {'Sub':0, 'Add':1, 'Mul':2}
74+ self.mathbin2code = {'Sub':0, 'Add':1, 'Mul':2, 'RealDiv':3}
7575 self.mirrorpad_mode = {'CONSTANT':0, 'REFLECT':1, 'SYMMETRIC':2}
7676 self.name_operand_dict = {}
7777
@@ -311,7 +311,8 @@ class TFConverter: · 233 unmodified lines
311311 self.dump_mathbinary_to_file(node, f)
312312 elif node.op == 'Mul':
313313 self.dump_mathbinary_to_file(node, f)
314−
314+ elif node.op == 'RealDiv':
315+ self.dump_mathbinary_to_file(node, f)
315316
316317 def dump_operands_to_file(self, f):
317318 operands = sorted(self.name_operand_dict.values())
tools/python/convert_header.py+1−1
@@ -23,4 +23,4 @@ str = 'FFMPEGDNNNATIVE' · 22 unmodified lines
2323 major = 1
2424
2525 # increase minor when we don't have to re-convert the model file
26−minor = 3
26+minor = 4

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