Android项目上处理图像的代码（注释全部去掉）
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void RGB2HSV( uint16_t * h, uint16_t * s, uint16_t * v, uint8_t r, uint8_t g, uint8_t b){ double rr, gg, bb; double hh, ss, vv; double cmax, cmin, cdes; rr = r; gg = g; bb = b; cmax = (rr > gg) ? rr : gg; if (bb > cmax) { cmax = bb; } cmin = (rr < gg) ? rr : gg; if (bb < cmin) { cmin = bb; } cdes = cmax - cmin; vv = cmax; if (cdes != 0) { ss = cdes * SCALE / cmax; if (cmax == rr) { hh = (gg - bb) * SCALE / cdes; }else if (cmax == gg) { hh = (bb - rr) * SCALE / cdes + 2 * H_SCALE; }else { hh = (rr - gg) * SCALE / cdes + 4 * H_SCALE; } }else if (cmax != 0) { ss = cdes * SCALE / cmax; hh = 0; }else { ss = 0; hh = 0; } if (hh < 0) { hh += 6 * H_SCALE; } *h = hh * H_GETA; *s = ss * H_GETA; *v = vv * H_GETA;}void HSV2RGB( uint8_t *r, uint8_t *g, uint8_t *b, uint16_t h, uint16_t s, uint16_t v){ double rr = 0, gg = 0, bb = 0; double hh, ss, vv; if (h == 6 * H_GETA * H_SCALE) { h = 0; } hh = (double)h / H_GETA; ss = (double)s / GETA; vv = (double)v / GETA; switch((int)(hh / H_SCALE)) { case 0: rr = SCALE; gg = hh; bb = 0; break; case 1: rr = 2 * H_SCALE - hh; gg = SCALE; bb = 0; break; case 2: rr = 0; gg = SCALE; bb = hh - 2 * H_SCALE; break; case 3: rr = 0; gg = 4 * H_SCALE - hh; bb = SCALE; break; case 4: rr = hh - 4 * H_SCALE; gg = 0; bb = SCALE; break; case 5: rr = SCALE; gg = 0; bb = 6 * H_SCALE - hh; break; } rr = (rr + (SCALE - rr) * (SCALE - ss) / SCALE) * vv / SCALE; gg = (gg + (SCALE - gg) * (SCALE - ss) / SCALE) * vv / SCALE; bb = (bb + (SCALE - bb) * (SCALE - ss) / SCALE) * vv / SCALE; *r = rr; *g = gg; *b = bb; if (*r > 255)*r = 255; if (*g > 255)*g = 255; if (*b > 255)*b = 255;}void RGB2HLS( double *h, double *l, double *s, uint8_t r, uint8_t g, uint8_t b){ double dr = (double)r/255; double dg = (double)g/255; double db = (double)b/255; double cmax = MAX(dr, MAX(dg, db)); double cmin = MIN(dr, MIN(dg, db)); double cdes = cmax - cmin; double hh, ll, ss; ll = (cmax+cmin)/2; if(cdes){ if(ll <= 0.5) ss = (cmax-cmin)/(cmax+cmin); else ss = (cmax-cmin)/(2-cmax-cmin); if(cmax == dr) hh = (0+(dg-db)/cdes)*60; else if(cmax == dg) hh = (2+(db-dr)/cdes)*60; else// if(cmax == b) hh = (4+(dr-dg)/cdes)*60; if(hh<0) hh+=360; }else hh = ss = 0; *h = hh; *l = ll; *s = ss;}void HLS2RGB( uint8_t *r, uint8_t *g, uint8_t *b, double h, double l, double s){ double cmax,cmin; if(l <= 0.5) cmax = l*(1+s); else cmax = l*(1-s)+s; cmin = 2*l-cmax; if(s == 0){ *r = *g = *b = l*255; }else{ *r = HLS2RGBvalue(cmin,cmax,h+120)*255; *g = HLS2RGBvalue(cmin,cmax,h)*255; *b = HLS2RGBvalue(cmin,cmax,h-120)*255; }}double HLS2RGBvalue(double n1,double n2, double hue){ if(hue > 360) hue -= 360; else if(hue < 0) hue += 360; if(hue < 60) return n1+(n2-n1)*hue/60; else if(hue < 180) return n2; else if(hue < 240) return n1+(n2-n1)*(240-hue)/60; else return n1;} |