| /** |
| * Copyright (c) 2016-present, Facebook, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "ps_roi_pool_op.h" |
| |
| namespace caffe2 { |
| |
| REGISTER_CPU_OPERATOR(PSRoIPool, PSRoIPoolOp<float, CPUContext>); |
| REGISTER_CPU_OPERATOR( |
| PSRoIPoolGradient, |
| PSRoIPoolGradientOp<float, CPUContext>); |
| |
| OPERATOR_SCHEMA(PSRoIPool) |
| .NumInputs(2) |
| .NumOutputs(2) |
| .SetDoc(R"DOC( |
| Position Sensitive Region of Interest Pooling as used in R-FCN. |
| )DOC") |
| .Arg( |
| "spatial_scale", |
| "(float) default 1.0; Spatial scale of the input feature map X " |
| "relative to the input image. E.g., 0.0625 if X has a stride of 16 " |
| "w.r.t. the input image.") |
| .Arg( |
| "group_size", |
| "(int) default 1; pooled_h = pooled_w = group_size where pooled_{h,w} " |
| "is the pooled output Y's height and width, respectively.") |
| .Arg( |
| "output_dim", |
| "(int) default 1; number of channels in the pooled output, which might " |
| "be the number of classes is used for classification or 4 if used for " |
| "class agnostic bounding box regression.") |
| .Input( |
| 0, |
| "X", |
| "4D position sensitive feature map input of shape (N, C, H, W), where " |
| "C = group_size**2 * output_dim.") |
| .Input( |
| 1, |
| "RoIs", |
| "2D input of shape (R, 5) specifying R RoIs with five columns " |
| "representing: batch index in [0, N - 1], x1, y1, x2, y2. The RoI " |
| "coordinates are in the coordinate system of the input image.") |
| .Output( |
| 0, |
| "Y", |
| "4D output of shape (R, output_dim, pooled_h, pooled_w). The r-th " |
| "batch element is a pooled feature map cooresponding to the r-th RoI.") |
| .Output( |
| 1, |
| "argmaxes", |
| "4D output of shape (R, output_dim, pooled_h, pooled_w). Same as Y, " |
| "except it records the argmax indices rather than the max pooled " |
| "values."); |
| |
| OPERATOR_SCHEMA(PSRoIPoolGradient) |
| .NumInputs(4) |
| .NumOutputs(1) |
| .Input( |
| 0, |
| "X", |
| "See PSRoIPool.") |
| .Input( |
| 1, |
| "RoIs", |
| "See PSRoIPool.") |
| .Input( |
| 2, |
| "argmaxes", |
| "See PSRoIPool.") |
| .Input( |
| 3, |
| "dY", |
| "Gradient of forward output 0 (Y)") |
| .Output( |
| 0, |
| "dX", |
| "Gradient of forward input 0 (X)"); |
| |
| class GetPSRoIPoolGradient : public GradientMakerBase { |
| using GradientMakerBase::GradientMakerBase; |
| vector<OperatorDef> GetGradientDefs() override { |
| return SingleGradientDef( |
| "PSRoIPoolGradient", |
| "", |
| vector<string>{I(0), I(1), O(1), GO(0)}, |
| vector<string>{GI(0)}); |
| } |
| }; |
| |
| REGISTER_GRADIENT(PSRoIPool, GetPSRoIPoolGradient); |
| |
| } // namespace caffe2 |
