Commit c722968d9e176953c72a4d6216fe6631e105796b
Merge pull request #342 from biometrics/pills_crop
Crop from mask
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openbr/plugins/imgproc/cropfrommask.cpp
0 → 100644
| 1 | +#include <openbr/plugins/openbr_internal.h> | |
| 2 | + | |
| 3 | +using namespace cv; | |
| 4 | + | |
| 5 | +namespace br | |
| 6 | +{ | |
| 7 | + | |
| 8 | +/*! | |
| 9 | + * \ingroup transforms | |
| 10 | + * \brief Crops image based on mask metadata | |
| 11 | + * \author Brendan Klare \cite bklare | |
| 12 | + */ | |
| 13 | +class CropFromMaskTransform : public UntrainableTransform | |
| 14 | +{ | |
| 15 | + Q_OBJECT | |
| 16 | + Q_PROPERTY(bool fixedAspectRatio READ get_fixedAspectRatio WRITE set_fixedAspectRatio RESET reset_fixedAspectRatio STORED false) | |
| 17 | + BR_PROPERTY(bool, fixedAspectRatio, true) | |
| 18 | + | |
| 19 | +private: | |
| 20 | + | |
| 21 | + void project(const Template &src, Template &dst) const | |
| 22 | + { | |
| 23 | + dst = src; | |
| 24 | + | |
| 25 | + Mat mask = dst.file.get<Mat>("Mask"); | |
| 26 | + | |
| 27 | + int w = mask.rows; | |
| 28 | + int h = mask.cols; | |
| 29 | + int left = w; | |
| 30 | + int right = 0; | |
| 31 | + int top = h; | |
| 32 | + int bottom = 0; | |
| 33 | + for (int i = 0 ; i < w; i++) { | |
| 34 | + for (int j = 0 ; j < h; j++) { | |
| 35 | + if (mask.at<unsigned char>(i,j)) { | |
| 36 | + if (i < left) | |
| 37 | + left = i; | |
| 38 | + if (i > right) | |
| 39 | + right = i; | |
| 40 | + if (j < top) | |
| 41 | + top = j; | |
| 42 | + if (j > bottom) | |
| 43 | + bottom = j; | |
| 44 | + } | |
| 45 | + } | |
| 46 | + } | |
| 47 | + | |
| 48 | + if (fixedAspectRatio) { | |
| 49 | + h = bottom - top + 1; | |
| 50 | + w = right - left + 1; | |
| 51 | + if (h > w) { | |
| 52 | + int h2 = (h - w) / 2; | |
| 53 | + right += h2; | |
| 54 | + left -= h2; | |
| 55 | + } else { | |
| 56 | + int w2 = (w - h) / 2; | |
| 57 | + bottom += w2; | |
| 58 | + top -= w2; | |
| 59 | + } | |
| 60 | + } | |
| 61 | + | |
| 62 | + dst.m() = Mat(src.m(), Rect(top, left, bottom - top + 1, right - left + 1)); | |
| 63 | + | |
| 64 | + } | |
| 65 | +}; | |
| 66 | + | |
| 67 | +BR_REGISTER(Transform, CropFromMaskTransform) | |
| 68 | + | |
| 69 | +} // namespace br | |
| 70 | + | |
| 71 | +#include "imgproc/cropfrommask.moc" | ... | ... |