diff options
Diffstat (limited to 'quantize.c')
| -rw-r--r-- | quantize.c | 810 |
1 files changed, 405 insertions, 405 deletions
@@ -21,85 +21,85 @@ cQuantize::~cQuantize() { } cQuantizeFixed::cQuantizeFixed() { - redLevelCount = 7; - greenLevelCount = 9; - blueLevelCount = 4; - - redLevels[0] = 0; - redLevels[redLevelCount - 1] = 255; - for (int i = 1; i < redLevelCount - 1; i++) { - redLevels[i] = (256 * i) / (redLevelCount - 1); - } - - greenLevels[0] = 0; - greenLevels[greenLevelCount - 1] = 255; - for (int i = 1; i < greenLevelCount - 1; i++) { - greenLevels[i] = (256 * i) / (greenLevelCount - 1); - } - - blueLevels[0] = 0; - blueLevels[blueLevelCount - 1] = 255; - for (int i = 1; i < blueLevelCount - 1; i++) { - blueLevels[i] = (256 * i) / (blueLevelCount - 1); - } - - for (int r = 0; r < redLevelCount; r++) { - for (int g = 0; g < greenLevelCount; g++) { - for (int b = 0; b < blueLevelCount; b++) { - paletteOutput[r * greenLevelCount * blueLevelCount + g * blueLevelCount + b] = - (redLevels[r] << 16) | (greenLevels[g] << 8) | blueLevels[b]; - } - } - } + redLevelCount = 7; + greenLevelCount = 9; + blueLevelCount = 4; + + redLevels[0] = 0; + redLevels[redLevelCount - 1] = 255; + for (int i = 1; i < redLevelCount - 1; i++) { + redLevels[i] = (256 * i) / (redLevelCount - 1); + } + + greenLevels[0] = 0; + greenLevels[greenLevelCount - 1] = 255; + for (int i = 1; i < greenLevelCount - 1; i++) { + greenLevels[i] = (256 * i) / (greenLevelCount - 1); + } + + blueLevels[0] = 0; + blueLevels[blueLevelCount - 1] = 255; + for (int i = 1; i < blueLevelCount - 1; i++) { + blueLevels[i] = (256 * i) / (blueLevelCount - 1); + } + + for (int r = 0; r < redLevelCount; r++) { + for (int g = 0; g < greenLevelCount; g++) { + for (int b = 0; b < blueLevelCount; b++) { + paletteOutput[r * greenLevelCount * blueLevelCount + g * blueLevelCount + b] = + (redLevels[r] << 16) | (greenLevels[g] << 8) | blueLevels[b]; + } + } + } } cQuantizeFixed::~cQuantizeFixed() { } int cQuantizeFixed::Quantize(unsigned char * input, int size, int colors) { - imageInput = input; - imageSize = size; - - unsigned int * imagePtr = (unsigned int *) imageInput; - int diff, diffOld; - unsigned int value; - unsigned char redValue; - unsigned char greenValue; - unsigned char blueValue; - int r, g, b; - for (int i = 0; i < imageSize; i++) { - value = *imagePtr; - redValue = value; - greenValue = value >> 8; - blueValue = value >> 16; - diffOld = 256; - for (r = 0; r < redLevelCount; r++) { - diff = abs(redLevels[r] - redValue); - if (diff > diffOld) - break; - diffOld = diff; - } - diffOld = 256; - for (g = 0; g < greenLevelCount; g++) { - diff = abs(greenLevels[g] - greenValue); - if (diff > diffOld) - break; - diffOld = diff; - } - diffOld = 256; - for (b = 0; b < blueLevelCount; b++) { - diff = abs(blueLevels[b] - blueValue); - if (diff > diffOld) - break; - diffOld = diff; - } - r--; - g--; - b--; - imageOutput[i] = r * greenLevelCount * blueLevelCount + g * blueLevelCount + b; - imagePtr++; - } - return 0; + imageInput = input; + imageSize = size; + + unsigned int * imagePtr = (unsigned int *) imageInput; + int diff, diffOld; + unsigned int value; + unsigned char redValue; + unsigned char greenValue; + unsigned char blueValue; + int r, g, b; + for (int i = 0; i < imageSize; i++) { + value = *imagePtr; + redValue = value; + greenValue = value >> 8; + blueValue = value >> 16; + diffOld = 256; + for (r = 0; r < redLevelCount; r++) { + diff = abs(redLevels[r] - redValue); + if (diff > diffOld) + break; + diffOld = diff; + } + diffOld = 256; + for (g = 0; g < greenLevelCount; g++) { + diff = abs(greenLevels[g] - greenValue); + if (diff > diffOld) + break; + diffOld = diff; + } + diffOld = 256; + for (b = 0; b < blueLevelCount; b++) { + diff = abs(blueLevels[b] - blueValue); + if (diff > diffOld) + break; + diffOld = diff; + } + r--; + g--; + b--; + imageOutput[i] = r * greenLevelCount * blueLevelCount + g * blueLevelCount + b; + imagePtr++; + } + return 0; } cQuantizeWu::cQuantizeWu() @@ -110,139 +110,139 @@ cQuantizeWu::~cQuantizeWu() { } -#define WEIG //>>2 +#define WEIG //>>2 int cQuantizeWu::Quantize(unsigned char * input, int size, int colors) { - struct box cube[MAXCOLOR]; + struct box cube[MAXCOLOR]; int next; - int i; - int j; - int k; - int l; - float vv[MAXCOLOR]; - float temp; - unsigned char * tag; - long weight; - - imageInput = input; - imageSize = size; - palSize = colors; - - for (j = 0; j < BOX; j++) - for (k = 0; k < BOX; k++) - for (l = 0; l < BOX; l++) - { - wt[j][k][l] = 0; - mr[j][k][l] = 0; - mg[j][k][l] = 0; - mb[j][k][l] = 0; - m2[j][k][l] = 0.0; - } - - Qadd = new unsigned short[imageSize * sizeof(unsigned short)]; + int i; + int j; + int k; + int l; + float vv[MAXCOLOR]; + float temp; + unsigned char * tag; + long weight; + + imageInput = input; + imageSize = size; + palSize = colors; + + for (j = 0; j < BOX; j++) + for (k = 0; k < BOX; k++) + for (l = 0; l < BOX; l++) + { + wt[j][k][l] = 0; + mr[j][k][l] = 0; + mg[j][k][l] = 0; + mb[j][k][l] = 0; + m2[j][k][l] = 0.0; + } + + Qadd = new unsigned short[imageSize * sizeof(unsigned short)]; Hist3d((long *)&wt, (long *)&mr, (long *)&mg, (long *)&mb, (float *)&m2); Momt3d((long *)&wt, (long *)&mr, (long *)&mg, (long *)&mb, (float *)&m2); cube[0].r0 = cube[0].g0 = cube[0].b0 = 0; cube[0].r1 = cube[0].g1 = cube[0].b1 = 32; - next = 0; - for (i = 1; i < palSize; i++) - { - if (Cut(&cube[next], &cube[i])) - { - vv[next] = (cube[next].vol > 1) ? Var(&cube[next]) : 0.0; - vv[i] = (cube[i].vol > 1) ? Var(&cube[i]) : 0.0; - } - else - { - vv[next] = 0.0; - i--; - } - next = 0; - temp = vv[0]; - for (k = 1; k <= i; k++) - if (vv[k] > temp) - { - temp = vv[k]; - next = k; - } - if (temp <= 0.0) - { - palSize = i + 1; - break; - } - } + next = 0; + for (i = 1; i < palSize; i++) + { + if (Cut(&cube[next], &cube[i])) + { + vv[next] = (cube[next].vol > 1) ? Var(&cube[next]) : 0.0; + vv[i] = (cube[i].vol > 1) ? Var(&cube[i]) : 0.0; + } + else + { + vv[next] = 0.0; + i--; + } + next = 0; + temp = vv[0]; + for (k = 1; k <= i; k++) + if (vv[k] > temp) + { + temp = vv[k]; + next = k; + } + if (temp <= 0.0) + { + palSize = i + 1; + break; + } + } tag = new unsigned char[BOX * BOX * BOX]; - unsigned char * palette = (unsigned char *) paletteOutput; - for (k = 0; k < palSize; ++k) - { - Mark(&cube[k], k, tag); - weight = Vol(&cube[k], wt); - if (weight) - { + unsigned char * palette = (unsigned char *) paletteOutput; + for (k = 0; k < palSize; ++k) + { + Mark(&cube[k], k, tag); + weight = Vol(&cube[k], wt); + if (weight) + { #ifdef NOINVERT - palette[k * 4 + 2] = (Vol(&cube[k], mb) / weight) WEIG; - palette[k * 4 + 0] = (Vol(&cube[k], mr) / weight) WEIG; + palette[k * 4 + 2] = (Vol(&cube[k], mb) / weight) WEIG; + palette[k * 4 + 0] = (Vol(&cube[k], mr) / weight) WEIG; #else - palette[k * 4 + 0] = (Vol(&cube[k], mb) / weight) WEIG; - palette[k * 4 + 2] = (Vol(&cube[k], mr) / weight) WEIG; + palette[k * 4 + 0] = (Vol(&cube[k], mb) / weight) WEIG; + palette[k * 4 + 2] = (Vol(&cube[k], mr) / weight) WEIG; #endif - palette[k * 4 + 1] = (Vol(&cube[k], mg) / weight) WEIG; - } - else - { - palette[k * 4 + 0] = 0; - palette[k * 4 + 1] = 0; - palette[k * 4 + 2] = 0; - } - } - - for (i = 0; i < imageSize; i++) - { - imageOutput[i] = tag[Qadd[i]]; - } - - delete[] tag; - delete[] Qadd; - - return 0; + palette[k * 4 + 1] = (Vol(&cube[k], mg) / weight) WEIG; + } + else + { + palette[k * 4 + 0] = 0; + palette[k * 4 + 1] = 0; + palette[k * 4 + 2] = 0; + } + } + + for (i = 0; i < imageSize; i++) + { + imageOutput[i] = tag[Qadd[i]]; + } + + delete[] tag; + delete[] Qadd; + + return 0; } // build 3-D color histogram of counts, r/g/b, c^2 void cQuantizeWu::Hist3d(long *vwt, long *vmr, long *vmg, long *vmb, float *m_2) { - int ind; - int r; - int g; - int b; + int ind; + int r; + int g; + int b; int inr; - int ing; - int inb; - int table[256]; - int i; - - for (i = 0; i < 256; i++) - table[i] = i * i; - - for (i = 0; i < imageSize; i++) - { - r = imageInput[i*4]; - g = imageInput[i*4+1]; - b = imageInput[i*4+2]; - - inr = (r >> 3) + 1; - ing = (g >> 3) + 1; - inb = (b >> 3) + 1; - Qadd[i] = ind = (inr << 10) + (inr << 6) + inr + (ing << 5) + ing + inb; - - vwt[ind]++; - vmr[ind] += r; - vmg[ind] += g; - vmb[ind] += b; - m_2[ind] += (float) (table[r] + table[g] + table[b]); + int ing; + int inb; + int table[256]; + int i; + + for (i = 0; i < 256; i++) + table[i] = i * i; + + for (i = 0; i < imageSize; i++) + { + r = imageInput[i*4]; + g = imageInput[i*4+1]; + b = imageInput[i*4+2]; + + inr = (r >> 3) + 1; + ing = (g >> 3) + 1; + inb = (b >> 3) + 1; + Qadd[i] = ind = (inr << 10) + (inr << 6) + inr + (ing << 5) + ing + inb; + + vwt[ind]++; + vmr[ind] += r; + vmg[ind] += g; + vmb[ind] += b; + m_2[ind] += (float) (table[r] + table[g] + table[b]); } } @@ -250,265 +250,265 @@ void cQuantizeWu::Hist3d(long *vwt, long *vmr, long *vmg, long *vmb, float *m_2) // the sums of the above quantities over any desired box. void cQuantizeWu::Momt3d(long *vwt, long *vmr, long *vmg, long *vmb, float *m_2) { - unsigned short ind1; - unsigned short ind2; - unsigned char i; - unsigned char r; - unsigned char g; - unsigned char b; - long line; - long line_r; - long line_g; - long line_b; - long area[BOX]; - long area_r[BOX]; - long area_g[BOX]; - long area_b[BOX]; + unsigned short ind1; + unsigned short ind2; + unsigned char i; + unsigned char r; + unsigned char g; + unsigned char b; + long line; + long line_r; + long line_g; + long line_b; + long area[BOX]; + long area_r[BOX]; + long area_g[BOX]; + long area_b[BOX]; float line2; - float area2[BOX]; - - for (r = 1; r <= 32; ++r) - { - for (i = 0; i <= 32; ++i) - area2[i] = area[i] = area_r[i] = area_g[i] = area_b[i] = 0; - for (g = 1; g <= 32; ++g) - { - line2 = line = line_r = line_g = line_b = 0; - for (b = 1; b <= 32; ++b) - { - ind1 = (r << 10) + (r << 6) + r + (g << 5) + g + b; - line += vwt[ind1]; - line_r += vmr[ind1]; - line_g += vmg[ind1]; - line_b += vmb[ind1]; - line2 += m_2[ind1]; - area[b] += line; - area_r[b] += line_r; - area_g[b] += line_g; - area_b[b] += line_b; - area2[b] += line2; - ind2 = ind1 - 1089; /* [r-1][g][b] */ - vwt[ind1] = vwt[ind2] + area[b]; - vmr[ind1] = vmr[ind2] + area_r[b]; - vmg[ind1] = vmg[ind2] + area_g[b]; - vmb[ind1] = vmb[ind2] + area_b[b]; - m_2[ind1] = m_2[ind2] + area2[b]; - } - } - } + float area2[BOX]; + + for (r = 1; r <= 32; ++r) + { + for (i = 0; i <= 32; ++i) + area2[i] = area[i] = area_r[i] = area_g[i] = area_b[i] = 0; + for (g = 1; g <= 32; ++g) + { + line2 = line = line_r = line_g = line_b = 0; + for (b = 1; b <= 32; ++b) + { + ind1 = (r << 10) + (r << 6) + r + (g << 5) + g + b; + line += vwt[ind1]; + line_r += vmr[ind1]; + line_g += vmg[ind1]; + line_b += vmb[ind1]; + line2 += m_2[ind1]; + area[b] += line; + area_r[b] += line_r; + area_g[b] += line_g; + area_b[b] += line_b; + area2[b] += line2; + ind2 = ind1 - 1089; /* [r-1][g][b] */ + vwt[ind1] = vwt[ind2] + area[b]; + vmr[ind1] = vmr[ind2] + area_r[b]; + vmg[ind1] = vmg[ind2] + area_g[b]; + vmb[ind1] = vmb[ind2] + area_b[b]; + m_2[ind1] = m_2[ind2] + area2[b]; + } + } + } } int cQuantizeWu::Cut(struct box * set1, struct box * set2) { - unsigned char dir; - int cutr; - int cutg; - int cutb; - float maxr; - float maxg; - float maxb; - long whole_r; - long whole_g; - long whole_b; - long whole_w; - - whole_r = Vol(set1, mr); - whole_g = Vol(set1, mg); - whole_b = Vol(set1, mb); - whole_w = Vol(set1, wt); - - maxr = Maximize(set1, RED, set1->r0 + 1, set1->r1, &cutr, - whole_r, whole_g, whole_b, whole_w); + unsigned char dir; + int cutr; + int cutg; + int cutb; + float maxr; + float maxg; + float maxb; + long whole_r; + long whole_g; + long whole_b; + long whole_w; + + whole_r = Vol(set1, mr); + whole_g = Vol(set1, mg); + whole_b = Vol(set1, mb); + whole_w = Vol(set1, wt); + + maxr = Maximize(set1, RED, set1->r0 + 1, set1->r1, &cutr, + whole_r, whole_g, whole_b, whole_w); maxg = Maximize(set1, GREEN, set1->g0 + 1, set1->g1, &cutg, - whole_r, whole_g, whole_b, whole_w); + whole_r, whole_g, whole_b, whole_w); maxb = Maximize(set1, BLUE, set1->b0 + 1, set1->b1, &cutb, - whole_r, whole_g, whole_b, whole_w); + whole_r, whole_g, whole_b, whole_w); - if ((maxr >= maxg) && (maxr >= maxb)) - { - dir = RED; - if (cutr < 0) - return 0; /* can't split the box */ + if ((maxr >= maxg) && (maxr >= maxb)) + { + dir = RED; + if (cutr < 0) + return 0; /* can't split the box */ } - else if ((maxg >= maxr) && (maxg >= maxb)) - dir = GREEN; - else - dir = BLUE; + else if ((maxg >= maxr) && (maxg >= maxb)) + dir = GREEN; + else + dir = BLUE; - set2->r1 = set1->r1; - set2->g1 = set1->g1; - set2->b1 = set1->b1; + set2->r1 = set1->r1; + set2->g1 = set1->g1; + set2->b1 = set1->b1; - switch (dir) - { + switch (dir) + { case RED: - set2->r0 = set1->r1 = cutr; - set2->g0 = set1->g0; - set2->b0 = set1->b0; - break; - case GREEN: - set2->g0 = set1->g1 = cutg; - set2->r0 = set1->r0; - set2->b0 = set1->b0; - break; + set2->r0 = set1->r1 = cutr; + set2->g0 = set1->g0; + set2->b0 = set1->b0; + break; + case GREEN: + set2->g0 = set1->g1 = cutg; + set2->r0 = set1->r0; + set2->b0 = set1->b0; + break; case BLUE: - set2->b0 = set1->b1 = cutb; - set2->r0 = set1->r0; - set2->g0 = set1->g0; - break; + set2->b0 = set1->b1 = cutb; + set2->r0 = set1->r0; + set2->g0 = set1->g0; + break; } - set1->vol = (set1->r1 - set1->r0) * (set1->g1 - set1->g0) * (set1->b1 - set1->b0); - set2->vol = (set2->r1 - set2->r0) * (set2->g1 - set2->g0) * (set2->b1 - set2->b0); + set1->vol = (set1->r1 - set1->r0) * (set1->g1 - set1->g0) * (set1->b1 - set1->b0); + set2->vol = (set2->r1 - set2->r0) * (set2->g1 - set2->g0) * (set2->b1 - set2->b0); return 1; } long cQuantizeWu::Vol(struct box * cube, long mmt[BOX][BOX][BOX]) { - return (mmt[cube->r1][cube->g1][cube->b1] - - mmt[cube->r1][cube->g1][cube->b0] - - mmt[cube->r1][cube->g0][cube->b1] - + mmt[cube->r1][cube->g0][cube->b0] - - mmt[cube->r0][cube->g1][cube->b1] - + mmt[cube->r0][cube->g1][cube->b0] - + mmt[cube->r0][cube->g0][cube->b1] - - mmt[cube->r0][cube->g0][cube->b0]); + return (mmt[cube->r1][cube->g1][cube->b1] + - mmt[cube->r1][cube->g1][cube->b0] + - mmt[cube->r1][cube->g0][cube->b1] + + mmt[cube->r1][cube->g0][cube->b0] + - mmt[cube->r0][cube->g1][cube->b1] + + mmt[cube->r0][cube->g1][cube->b0] + + mmt[cube->r0][cube->g0][cube->b1] + - mmt[cube->r0][cube->g0][cube->b0]); } float cQuantizeWu::Maximize(struct box * cube, unsigned char dir, int first, int last, int * cut, long whole_r, long whole_g, long whole_b, long whole_w) { - long half_r; - long half_g; - long half_b; - long half_w; - long base_r; - long base_g; - long base_b; - long base_w; - int i; - float temp; - float max; - - base_r = Bottom(cube, dir, mr); - base_g = Bottom(cube, dir, mg); - base_b = Bottom(cube, dir, mb); - base_w = Bottom(cube, dir, wt); - max = 0.0; - *cut = -1; - for (i = first; i < last; i++) - { - half_r = base_r + Top(cube, dir, i, mr); - half_g = base_g + Top(cube, dir, i, mg); - half_b = base_b + Top(cube, dir, i, mb); - half_w = base_w + Top(cube, dir, i, wt); - // now half_x is sum over lower half of box, if split at i - if (half_w == 0) - { - // subbox could be empty of pixels! - continue; // never split into an empty box - } - else - temp = ((float) half_r * half_r + (float) half_g * half_g + (float) half_b * half_b) / half_w; - - half_r = whole_r - half_r; - half_g = whole_g - half_g; - half_b = whole_b - half_b; - half_w = whole_w - half_w; - if (half_w == 0) - { - // subbox could be empty of pixels! - continue; // never split into an empty box - } - else - temp += ((float) half_r * half_r + (float) half_g * half_g + (float) half_b * half_b) / half_w; - - if (temp > max) - { - max = temp; - *cut = i; - } - } - return (max); + long half_r; + long half_g; + long half_b; + long half_w; + long base_r; + long base_g; + long base_b; + long base_w; + int i; + float temp; + float max; + + base_r = Bottom(cube, dir, mr); + base_g = Bottom(cube, dir, mg); + base_b = Bottom(cube, dir, mb); + base_w = Bottom(cube, dir, wt); + max = 0.0; + *cut = -1; + for (i = first; i < last; i++) + { + half_r = base_r + Top(cube, dir, i, mr); + half_g = base_g + Top(cube, dir, i, mg); + half_b = base_b + Top(cube, dir, i, mb); + half_w = base_w + Top(cube, dir, i, wt); + // now half_x is sum over lower half of box, if split at i + if (half_w == 0) + { + // subbox could be empty of pixels! + continue; // never split into an empty box + } + else + temp = ((float) half_r * half_r + (float) half_g * half_g + (float) half_b * half_b) / half_w; + + half_r = whole_r - half_r; + half_g = whole_g - half_g; + half_b = whole_b - half_b; + half_w = whole_w - half_w; + if (half_w == 0) + { + // subbox could be empty of pixels! + continue; // never split into an empty box + } + else + temp += ((float) half_r * half_r + (float) half_g * half_g + (float) half_b * half_b) / half_w; + + if (temp > max) + { + max = temp; + *cut = i; + } + } + return (max); } float cQuantizeWu::Var(struct box * cube) { - float dr; - float dg; - float db; - float xx; - - dr = Vol(cube, mr); - dg = Vol(cube, mg); - db = Vol(cube, mb); - xx = m2[cube->r1][cube->g1][cube->b1] - - m2[cube->r1][cube->g1][cube->b0] - - m2[cube->r1][cube->g0][cube->b1] - + m2[cube->r1][cube->g0][cube->b0] - - m2[cube->r0][cube->g1][cube->b1] - + m2[cube->r0][cube->g1][cube->b0] - + m2[cube->r0][cube->g0][cube->b1] - - m2[cube->r0][cube->g0][cube->b0]; - - return (xx - (dr * dr + dg * dg + db * db) / (float) Vol(cube, wt)); + float dr; + float dg; + float db; + float xx; + + dr = Vol(cube, mr); + dg = Vol(cube, mg); + db = Vol(cube, mb); + xx = m2[cube->r1][cube->g1][cube->b1] + - m2[cube->r1][cube->g1][cube->b0] + - m2[cube->r1][cube->g0][cube->b1] + + m2[cube->r1][cube->g0][cube->b0] + - m2[cube->r0][cube->g1][cube->b1] + + m2[cube->r0][cube->g1][cube->b0] + + m2[cube->r0][cube->g0][cube->b1] + - m2[cube->r0][cube->g0][cube->b0]; + + return (xx - (dr * dr + dg * dg + db * db) / (float) Vol(cube, wt)); } long cQuantizeWu::Bottom(struct box * cube, unsigned char dir, long mmt[BOX][BOX][BOX]) { - switch (dir) - { - case RED: - return (-mmt[cube->r0][cube->g1][cube->b1] - + mmt[cube->r0][cube->g1][cube->b0] - + mmt[cube->r0][cube->g0][cube->b1] - - mmt[cube->r0][cube->g0][cube->b0]); - case GREEN: - return (-mmt[cube->r1][cube->g0][cube->b1] - + mmt[cube->r1][cube->g0][cube->b0] - + mmt[cube->r0][cube->g0][cube->b1] - - mmt[cube->r0][cube->g0][cube->b0]); - case BLUE: - return (-mmt[cube->r1][cube->g1][cube->b0] - + mmt[cube->r1][cube->g0][cube->b0] - + mmt[cube->r0][cube->g1][cube->b0] - - mmt[cube->r0][cube->g0][cube->b0]); - } - printf("error in Bottom()"); - return 0; + switch (dir) + { + case RED: + return (-mmt[cube->r0][cube->g1][cube->b1] + + mmt[cube->r0][cube->g1][cube->b0] + + mmt[cube->r0][cube->g0][cube->b1] + - mmt[cube->r0][cube->g0][cube->b0]); + case GREEN: + return (-mmt[cube->r1][cube->g0][cube->b1] + + mmt[cube->r1][cube->g0][cube->b0] + + mmt[cube->r0][cube->g0][cube->b1] + - mmt[cube->r0][cube->g0][cube->b0]); + case BLUE: + return (-mmt[cube->r1][cube->g1][cube->b0] + + mmt[cube->r1][cube->g0][cube->b0] + + mmt[cube->r0][cube->g1][cube->b0] + - mmt[cube->r0][cube->g0][cube->b0]); + } + printf("error in Bottom()"); + return 0; } long cQuantizeWu::Top(struct box * cube, unsigned char dir, int pos, long mmt[BOX][BOX][BOX]) { - switch (dir) - { - case RED: - return (mmt[pos][cube->g1][cube->b1] - - mmt[pos][cube->g1][cube->b0] - - mmt[pos][cube->g0][cube->b1] - + mmt[pos][cube->g0][cube->b0]); - case GREEN: - return (mmt[cube->r1][pos][cube->b1] - - mmt[cube->r1][pos][cube->b0] - - mmt[cube->r0][pos][cube->b1] - + mmt[cube->r0][pos][cube->b0]); - case BLUE: - return (mmt[cube->r1][cube->g1][pos] - - mmt[cube->r1][cube->g0][pos] - - mmt[cube->r0][cube->g1][pos] - + mmt[cube->r0][cube->g0][pos]); - } + switch (dir) + { + case RED: + return (mmt[pos][cube->g1][cube->b1] + - mmt[pos][cube->g1][cube->b0] + - mmt[pos][cube->g0][cube->b1] + + mmt[pos][cube->g0][cube->b0]); + case GREEN: + return (mmt[cube->r1][pos][cube->b1] + - mmt[cube->r1][pos][cube->b0] + - mmt[cube->r0][pos][cube->b1] + + mmt[cube->r0][pos][cube->b0]); + case BLUE: + return (mmt[cube->r1][cube->g1][pos] + - mmt[cube->r1][cube->g0][pos] + - mmt[cube->r0][cube->g1][pos] + + mmt[cube->r0][cube->g0][pos]); + } printf("error in Top()"); - return 0; + return 0; } void cQuantizeWu::Mark(struct box * cube, int label, unsigned char * tag) { - int r; - int g; - int b; - - for (r = cube->r0 + 1; r <= cube->r1; r++) - for (g = cube->g0 + 1; g <= cube->g1; g++) - for (b = cube->b0 + 1; b <= cube->b1; b++) - tag[(r << 10) + (r << 6) + r + (g << 5) + g + b] = label; + int r; + int g; + int b; + + for (r = cube->r0 + 1; r <= cube->r1; r++) + for (g = cube->g0 + 1; g <= cube->g1; g++) + for (b = cube->b0 + 1; b <= cube->b1; b++) + tag[(r << 10) + (r << 6) + r + (g << 5) + g + b] = label; } |