Commit 68b3bef7f3f287674ebde4500cc08fb52df03947
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ae78f5a2
Randomly shift an image
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openbr/plugins/imgproc/rndtranslate.cpp
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| 1 | +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * | ||
| 2 | + * Copyright 2015 Rank One Computing | ||
| 3 | + * * | ||
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); * | ||
| 5 | + * you may not use this file except in compliance with the License. * | ||
| 6 | + * You may obtain a copy of the License at * | ||
| 7 | + * * | ||
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 * | ||
| 9 | + * * | ||
| 10 | + * Unless required by applicable law or agreed to in writing, software * | ||
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, * | ||
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * | ||
| 13 | + * See the License for the specific language governing permissions and * | ||
| 14 | + * limitations under the License. * | ||
| 15 | + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | ||
| 16 | + | ||
| 17 | +#include <opencv2/imgproc/imgproc.hpp> | ||
| 18 | +#include <openbr/plugins/openbr_internal.h> | ||
| 19 | +#include <openbr/core/opencvutils.h> | ||
| 20 | + | ||
| 21 | +using namespace cv; | ||
| 22 | + | ||
| 23 | +namespace br | ||
| 24 | +{ | ||
| 25 | + | ||
| 26 | +/*! | ||
| 27 | + * \ingroup transforms | ||
| 28 | + * \brief Randomly translate an image based on the height of a face contained within | ||
| 29 | + * \br_param maxHeight The max percentage of face height to shift the image | ||
| 30 | + * \author Brendan Klare \cite bklare | ||
| 31 | + */ | ||
| 32 | +class RndTranslateTransform : public UntrainableMetaTransform | ||
| 33 | +{ | ||
| 34 | + Q_OBJECT | ||
| 35 | + | ||
| 36 | + Q_PROPERTY(float maxHeight READ get_maxHeight WRITE set_maxHeight RESET reset_maxHeight STORED false) | ||
| 37 | + BR_PROPERTY(float, maxHeight, .1) | ||
| 38 | + Q_PROPERTY(int nStages READ get_nStages WRITE set_nStages RESET reset_nStages STORED false) | ||
| 39 | + BR_PROPERTY(int, nStages, 3) | ||
| 40 | + | ||
| 41 | + void project(const Template &src, Template &dst) const | ||
| 42 | + { | ||
| 43 | + qFatal("Shoult not be here (RndTranslate)"); | ||
| 44 | + } | ||
| 45 | + | ||
| 46 | + void project(const TemplateList &srcList, TemplateList &dstList) const | ||
| 47 | + { | ||
| 48 | + foreach (const Template &src, srcList) { | ||
| 49 | + for (int stage = 0; stage < nStages; stage++) { | ||
| 50 | + | ||
| 51 | + Template dst = src; | ||
| 52 | + | ||
| 53 | + QPointF rightEye = src.file.get<QPointF>("RightEye"); | ||
| 54 | + QPointF leftEye = src.file.get<QPointF>("LeftEye"); | ||
| 55 | + QPointF chin = src.file.get<QPointF>("Chin"); | ||
| 56 | + QPointF eyeCenter = (rightEye + leftEye) / 2; | ||
| 57 | + const float length = sqrt(pow(eyeCenter.x() - chin.x(), 2.0) + | ||
| 58 | + pow(eyeCenter.y() - chin.y(), 2.0)); | ||
| 59 | + | ||
| 60 | + int max = qRound(length * maxHeight); | ||
| 61 | + int shiftX = (rand() % (max * 2 + 1)) - max; | ||
| 62 | + int shiftY = (rand() % (max * 2 + 1)) - max; | ||
| 63 | + //Mat out(src.m().rows, src.m().cols, src.m().type()); | ||
| 64 | + Mat out; | ||
| 65 | + Mat M = Mat::zeros(2, 3, CV_32F); | ||
| 66 | + M.at<float>(0,0) = 1; | ||
| 67 | + M.at<float>(1,1) = 1; | ||
| 68 | + M.at<float>(0,2) = shiftX; | ||
| 69 | + M.at<float>(1,2) = shiftY; | ||
| 70 | + warpAffine(src.m(), out, M, Size(src.m().rows, src.m().cols)); | ||
| 71 | + | ||
| 72 | + dst.m() = out; | ||
| 73 | + dstList += dst; | ||
| 74 | + } | ||
| 75 | + } | ||
| 76 | + } | ||
| 77 | +}; | ||
| 78 | + | ||
| 79 | +BR_REGISTER(Transform, RndTranslateTransform) | ||
| 80 | + | ||
| 81 | +} // namespace br | ||
| 82 | + | ||
| 83 | +#include "imgproc/rndtranslate.moc" |