f4334277
 Hu Chunming
提交3rdparty
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#ifndef __OPENCV_FEATURES_2D_KAZE_UTILS_H__
#define __OPENCV_FEATURES_2D_KAZE_UTILS_H__
/* ************************************************************************* */
/**
* @brief This function computes the value of a 2D Gaussian function
* @param x X Position
* @param y Y Position
* @param sig Standard Deviation
*/
inline float gaussian(float x, float y, float sigma) {
return expf(-(x*x + y*y) / (2.0f*sigma*sigma));
}
/* ************************************************************************* */
/**
* @brief This function checks descriptor limits
* @param x X Position
* @param y Y Position
* @param width Image width
* @param height Image height
*/
inline void checkDescriptorLimits(int &x, int &y, int width, int height) {
if (x < 0) {
x = 0;
}
if (y < 0) {
y = 0;
}
if (x > width - 1) {
x = width - 1;
}
if (y > height - 1) {
y = height - 1;
}
}
#endif
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