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ezSIFT: An easy-to-use standalone SIFT library written in C/C++

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hello, i like to use your opensource to my research but i don't know what is keypoint coordinate in image coordinate, can you please tell me?

I look at your example, the picture is the .bgm, how about the .jpg and .bmp?

Thank you for your well-commented program. I learned a lot from them. I have a question about a line of code. In **ezsift.cpp**, **line 218** ` gaussian_coefs[i][j] = expf(tmp *...