YUV12 (420) (from) to RGB24, yuv12rgb24

YUV12 (420) (from) to RGB24, yuv12rgb24

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# Include <opencv2/opencv. hpp> # include <stdio. h> # define min (a, B) (a <B )? A: B) # define max (a, B) (a> B )? A: B) /*************************************** * ******************************* // * YUV12 to RGB24 (4) basic Optimizations 3.1 *//********************************** * ***********************************/int yuv420_to_argb888 (const unsigned char * y, const unsigned char * u, const unsigned char * v, int width, int height, unsigned char * rgb) {static const int Precision = 32768; static const int Coefficient_y = (Int) (1.164 * Precision + 0.5); static const int Coefficient_rv = (int) (1.596 * Precision + 0.5); static const int Coefficient_gu = (int) (0.391 * Precision + 0.5); static const int Coefficient_gv = (int) (0.813 * Precision + 0.5); static const int Coefficient_bu = (int) (2.018 * Precision + 0.5 ); static int CoefficientY [256]; static int CoefficientRV [256]; static int CoefficientGU [256]; static int CoefficientG V [256]; static int CoefficientBU [256]; static int _ CoefficientsR [1024]; // static int _ CoefficientsG [1024]; // static int _ CoefficientsB [1024]; static int flag = 1; if (flag) {for (int I = 0; I <256; I ++) {CoefficientY [I] = Coefficient_y * (I-16) + (Precision/2); CoefficientGV [I] =-Coefficient_gv * (I-128); CoefficientBU [I] = Coefficient_bu * (I-128 ); coefficientGU [I] =-Coefficient_gu * (I-128); CoefficientRV [I] = Coefficient_rv * (I-128);} for (int j = 0; j <1024; j ++) {_ CoefficientsR [j] = min (max (j-320, 0), 255); // _ CoefficientsG [j] = min (max (j-320, 0 )), 255); // _ CoefficientsB [j] = min (max (j-320, 0), 255);} flag = 0;} CoefficientY [0] =-593888; coefficientY [1] =-555746; // fixed the bug !! CoefficientY [1] was accidentally changed to a large number when entering this function for the second time. The theoretical value should be-555746int * CoefficientsR = & _ CoefficientsR [320]; // int * CoefficientsG = & _ CoefficientsG [320]; // int * CoefficientsB = & _ CoefficientsB [320]; for (int h = 0; h 
// Compare 3 images histograms together, // the first is divided in half along y to test its other half // Call is: // ch7HistCmp modelImage0 testImage1 testImage2 badImage3 // Note that the model image is split in half. top half (0) makes model. it's then tested // against its lower half (0), testImages 1 and 2 in different lighting and different object 3 // int main (int argc, char ** argv) {IplImage * src [5], * tmp; int I; if (src [0] = cvLoadImage (argv [1], 1) = 0) {// We're re going to split this one in halfprintf ("Error on reading image 1, % s \ n", argv [1]); return (-1 );} // Parse the first image into two image halves divided halfway on yprintf ("Getting size [[% d] [% d] format is [% s] \ n ", src [0]-> width, src [0]-> height, src [0]-> channelSeq); CvSize size = cvGetSize (src [0]); printf ("Get size % d \ n", size. width, size. height); int width = size. width; int height = size. height; int halfheight = height> 1; // RGB888 to YUV420unsigned char * rgb = (unsigned char *) src [0]-> imageData; unsigned char * yuv = (unsigned char *) malloc (width * height + width * height/2); unsigned char * y = yuv; unsigned char * u = & yuv [width * height]; unsigned char * v = & yuv [width * height + width * height/4]; int k = 0; for (int I = 0; I 










Reference: https://msdn.microsoft.com/en-us/library/aa917087.aspx