liaogang
9 years ago
parent
86bb5ef169
commit
ddfff3a7fd
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/* Copyright (c) 2016 Baidu, Inc. All Rights Reserve.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#include "BilinearInterpLayer.h"
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#include "paddle/utils/Logging.h"
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#include "paddle/utils/Stat.h"
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namespace paddle {
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REGISTER_LAYER(bilinear_interp, BilinearInterpLayer);
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size_t BilinearInterpLayer::getDataDimSize() {
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getOutput().setFrameHeight(outImgH_);
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getOutput().setFrameWidth(outImgW_);
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return outImgH_ * outImgW_ * numChannels_;
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}
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bool BilinearInterpLayer::init(const LayerMap& layerMap,
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const ParameterMap& parameterMap) {
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/* Initialize the basic parent class */
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Layer::init(layerMap, parameterMap);
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CHECK_EQ(1, config_.inputs_size());
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const BilinearInterpConfig& conf = config_.inputs(0).bilinear_interp_conf();
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inImgH_ = inputLayers_[0]->getOutput().getFrameHeight();
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inImgW_ = inputLayers_[0]->getOutput().getFrameWidth();
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if (inImgH_ == 0) {
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inImgH_ = conf.img_size_y();
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}
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if (inImgW_ == 0) {
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inImgW_ = conf.img_size_x();
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}
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outImgH_ = conf.out_size_y();
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outImgW_ = conf.out_size_x();
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numChannels_ = conf.num_channels();
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CHECK(outImgH_ > 0 && outImgW_ > 0);
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CHECK(inImgH_ > 0 && inImgW_ > 0);
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CHECK(numChannels_);
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return true;
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}
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void BilinearInterpLayer::forward(PassType passType) {
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Layer::forward(passType);
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size_t batchSize = getInput(0).getBatchSize();
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size_t size = getDataDimSize();
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{
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REGISTER_TIMER_INFO("FwResetTimer", getName().c_str());
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resetOutput(batchSize, size);
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}
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MatrixPtr inV = getInputValue(0);
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MatrixPtr outV = getOutputValue();
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{
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REGISTER_TIMER_INFO("FwBilinearInterpTimer", getName().c_str());
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outV->bilinearForward(*inV, inImgH_, inImgW_, outImgH_, outImgW_,
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numChannels_);
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}
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}
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void BilinearInterpLayer::backward(const UpdateCallback& callback) {
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(void) callback;
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MatrixPtr inputG = getInputGrad(0);
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MatrixPtr outG = getOutputGrad();
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{
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REGISTER_TIMER_INFO("BwBilinearInterpTimer", getName().c_str());
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if (inputG) {
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inputG->bilinearBackward(*outG, outImgH_, outImgW_, inImgH_, inImgW_,
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numChannels_);
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}
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}
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}
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} // namespace paddle
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@ -0,0 +1,45 @@
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/* Copyright (c) 2016 Baidu, Inc. All Rights Reserve.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include "Layer.h"
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#include "paddle/math/Matrix.h"
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namespace paddle {
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/**
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* @brief A layer for bilinear interpolation which is
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* used on conv layer output.
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*
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* @note The config file api is bilinear_interp_layer.
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*/
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class BilinearInterpLayer : public Layer {
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protected:
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size_t outImgH_, outImgW_;
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size_t inImgH_, inImgW_;
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size_t numChannels_;
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public:
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explicit BilinearInterpLayer(const LayerConfig& config) : Layer(config) {}
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virtual ~BilinearInterpLayer() {}
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size_t getDataDimSize();
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bool init(const LayerMap& layerMap, const ParameterMap& parameterMap);
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void forward(PassType passType);
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void backward(const UpdateCallback& callback = nullptr);
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};
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} // namespace paddle
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@ -0,0 +1,33 @@
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from paddle.trainer_config_helpers import *
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settings(
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batch_size=1000,
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learning_rate=1e-5
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)
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data = data_layer(name='data', size=2304)
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conv = img_conv_layer(input=data,
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filter_size = 3,
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num_channels=1,
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num_filters=16,
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padding=1,
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act=LinearActivation(),
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bias_attr=True)
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bilinear = bilinear_interp_layer(input=conv,
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img_size_x=32,
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img_size_y=32,
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out_size_x=64,
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out_size_y=64,
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num_channels=16)
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pool = img_pool_layer(input=bilinear,
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num_channels=4,
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pool_size=2,
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stride=2,
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pool_type=MaxPooling())
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fc = fc_layer(input=pool, size=384, bias_attr=False)
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outputs(fc)
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