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https://github.com/curioustorvald/tsvm.git
synced 2026-03-07 11:51:49 +09:00
visualiser update
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minjaesong
@@ -23,6 +23,22 @@ static rgb_t map_coefficient_to_color(int16_t coeff) {
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return color;
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}
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if (coeff == 1) {
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// +1: Light green #55FF55
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color.r = 0x55;
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color.g = 0xFF;
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color.b = 0x55;
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return color;
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}
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if (coeff == -1) {
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// -1: Dark green #005500
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color.r = 0x00;
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color.g = 0x55;
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color.b = 0x00;
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return color;
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}
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if (coeff > 0) {
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// Positive: Red (#FF0000) to Yellow (#FFFF00)
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// Logarithmic mapping: log2(1) = 0, log2(32767) ≈ 14.99
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@@ -105,12 +121,13 @@ int main(int argc, char *argv[]) {
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}
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// Analyse coefficient distribution - Overall and per-subband
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size_t zeros = 0, positives = 0, negatives = 0;
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size_t zeros = 0, ones = 0, positives = 0, negatives = 0;
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int16_t min_val = INT16_MAX, max_val = INT16_MIN;
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// Calculate overall statistics
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for (size_t i = 0; i < expected_count; i++) {
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if (coeffs[i] == 0) zeros++;
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else if (coeffs[i] == 1 || coeffs[i] == -1) ones++;
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else if (coeffs[i] > 0) positives++;
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else negatives++;
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@@ -121,107 +138,127 @@ int main(int argc, char *argv[]) {
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printf("Overall coefficient statistics:\n");
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printf(" Total: %zu\n", expected_count);
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printf(" Zeros: %zu (%.1f%%)\n", zeros, 100.0 * zeros / expected_count);
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printf(" Ones: %zu (%.1f%%)\n", ones, 100.0 * ones / expected_count);
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printf(" Positives: %zu (%.1f%%)\n", positives, 100.0 * positives / expected_count);
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printf(" Negatives: %zu (%.1f%%)\n", negatives, 100.0 * negatives / expected_count);
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printf(" Range: [%d, %d]\n\n", min_val, max_val);
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// Per-subband statistics
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// Linear layout: [LL1, LH1, HL1, HH1, LH2, HL2, HH2, ..., LH6, HL6, HH6]
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size_t offset = 0;
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// Determine number of DWT levels (assuming standard 6-level for 560x448)
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// Per-subband statistics using 2D spatial layout
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// The coefficients are stored in 2D spatial arrangement like the PPM image
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int num_levels = 6;
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int w = width, h = height;
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// LL subband (deepest level, smallest)
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int ll_divisor = 1 << num_levels; // 2^6 = 64
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int ll_w = w / ll_divisor;
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int ll_h = h / ll_divisor;
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size_t ll_size = ll_w * ll_h;
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// Helper macro to get coefficient from 2D position
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#define GET_COEFF(x, y) coeffs[(y) * width + (x)]
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if (offset + ll_size <= expected_count) {
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size_t ll_zeros = 0, ll_pos = 0, ll_neg = 0;
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// Calculate subband dimensions for each level
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int level_w[7], level_h[7]; // level_w[1] = width/2, level_w[6] = width/64
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for (int i = 1; i <= num_levels; i++) {
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level_w[i] = width / (1 << i);
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level_h[i] = height / (1 << i);
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}
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// LL6 subband (top-left corner)
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{
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int ll_w = level_w[6], ll_h = level_h[6];
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size_t ll_zeros = 0, ll_ones = 0, ll_pos = 0, ll_neg = 0;
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int16_t ll_min = INT16_MAX, ll_max = INT16_MIN;
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for (size_t i = 0; i < ll_size; i++) {
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int16_t val = coeffs[offset + i];
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if (val == 0) ll_zeros++;
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else if (val > 0) ll_pos++;
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else ll_neg++;
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if (val < ll_min) ll_min = val;
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if (val > ll_max) ll_max = val;
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for (int y = 0; y < ll_h; y++) {
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for (int x = 0; x < ll_w; x++) {
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int16_t val = GET_COEFF(x, y);
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if (val == 0) ll_zeros++;
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else if (val == 1 || val == -1) ll_ones++;
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else if (val > 0) ll_pos++;
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else ll_neg++;
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if (val < ll_min) ll_min = val;
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if (val > ll_max) ll_max = val;
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}
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}
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printf("LL%d subband:\n", num_levels);
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printf(" Total: %zu\n", ll_size);
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printf(" Zeros: %zu (%.1f%%)\n", ll_zeros, 100.0 * ll_zeros / ll_size);
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printf(" Positives: %zu (%.1f%%)\n", ll_pos, 100.0 * ll_pos / ll_size);
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printf(" Negatives: %zu (%.1f%%)\n", ll_neg, 100.0 * ll_neg / ll_size);
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size_t ll_total = ll_w * ll_h;
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printf("LL%d subband (%dx%d):\n", num_levels, ll_w, ll_h);
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printf(" Total: %zu\n", ll_total);
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printf(" Zeros: %zu (%.1f%%)\n", ll_zeros, 100.0 * ll_zeros / ll_total);
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printf(" Ones: %zu (%.1f%%)\n", ll_ones, 100.0 * ll_ones / ll_total);
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printf(" Positives: %zu (%.1f%%)\n", ll_pos, 100.0 * ll_pos / ll_total);
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printf(" Negatives: %zu (%.1f%%)\n", ll_neg, 100.0 * ll_neg / ll_total);
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printf(" Range: [%d, %d]\n\n", ll_min, ll_max);
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offset += ll_size;
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}
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// LH, HL, HH subbands for each level (from deepest to finest)
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// Process each level from deepest (6) to finest (1)
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for (int level = num_levels; level >= 1; level--) {
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int divisor = 1 << level; // 2^level
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int sub_w = w / divisor;
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int sub_h = h / divisor;
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size_t sub_size = sub_w * sub_h;
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int half_w = level_w[level];
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int half_h = level_h[level];
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if (offset + 3 * sub_size > expected_count) break;
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// LH subband
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size_t lh_zeros = 0, lh_pos = 0, lh_neg = 0;
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// LH subband (horizontal high-pass) - right of LL region
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size_t lh_zeros = 0, lh_ones = 0, lh_pos = 0, lh_neg = 0;
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int16_t lh_min = INT16_MAX, lh_max = INT16_MIN;
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for (size_t i = 0; i < sub_size; i++) {
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int16_t val = coeffs[offset + i];
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if (val == 0) lh_zeros++;
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else if (val > 0) lh_pos++;
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else lh_neg++;
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if (val < lh_min) lh_min = val;
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if (val > lh_max) lh_max = val;
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}
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offset += sub_size;
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int lh_x0 = half_w, lh_y0 = 0;
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int lh_x1 = half_w * 2, lh_y1 = half_h;
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// HL subband
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size_t hl_zeros = 0, hl_pos = 0, hl_neg = 0;
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for (int y = lh_y0; y < lh_y1; y++) {
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for (int x = lh_x0; x < lh_x1; x++) {
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int16_t val = GET_COEFF(x, y);
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if (val == 0) lh_zeros++;
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else if (val == 1 || val == -1) lh_ones++;
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else if (val > 0) lh_pos++;
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else lh_neg++;
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if (val < lh_min) lh_min = val;
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if (val > lh_max) lh_max = val;
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}
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}
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// HL subband (vertical high-pass) - below LL region
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size_t hl_zeros = 0, hl_ones = 0, hl_pos = 0, hl_neg = 0;
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int16_t hl_min = INT16_MAX, hl_max = INT16_MIN;
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for (size_t i = 0; i < sub_size; i++) {
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int16_t val = coeffs[offset + i];
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if (val == 0) hl_zeros++;
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else if (val > 0) hl_pos++;
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else hl_neg++;
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if (val < hl_min) hl_min = val;
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if (val > hl_max) hl_max = val;
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}
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offset += sub_size;
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int hl_x0 = 0, hl_y0 = half_h;
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int hl_x1 = half_w, hl_y1 = half_h * 2;
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// HH subband
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size_t hh_zeros = 0, hh_pos = 0, hh_neg = 0;
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for (int y = hl_y0; y < hl_y1; y++) {
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for (int x = hl_x0; x < hl_x1; x++) {
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int16_t val = GET_COEFF(x, y);
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if (val == 0) hl_zeros++;
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else if (val == 1 || val == -1) hl_ones++;
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else if (val > 0) hl_pos++;
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else hl_neg++;
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if (val < hl_min) hl_min = val;
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if (val > hl_max) hl_max = val;
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}
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}
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// HH subband (diagonal high-pass) - bottom-right of LL region
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size_t hh_zeros = 0, hh_ones = 0, hh_pos = 0, hh_neg = 0;
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int16_t hh_min = INT16_MAX, hh_max = INT16_MIN;
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for (size_t i = 0; i < sub_size; i++) {
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int16_t val = coeffs[offset + i];
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if (val == 0) hh_zeros++;
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else if (val > 0) hh_pos++;
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else hh_neg++;
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if (val < hh_min) hh_min = val;
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if (val > hh_max) hh_max = val;
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}
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offset += sub_size;
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int hh_x0 = half_w, hh_y0 = half_h;
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int hh_x1 = half_w * 2, hh_y1 = half_h * 2;
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printf("Level %d subbands (%dx%d each):\n", level, sub_w, sub_h);
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printf(" LH%d: Total=%zu, Zeros=%zu (%.1f%%), Pos=%zu (%.1f%%), Neg=%zu (%.1f%%), Range=[%d,%d]\n",
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level, sub_size, lh_zeros, 100.0*lh_zeros/sub_size,
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lh_pos, 100.0*lh_pos/sub_size, lh_neg, 100.0*lh_neg/sub_size, lh_min, lh_max);
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printf(" HL%d: Total=%zu, Zeros=%zu (%.1f%%), Pos=%zu (%.1f%%), Neg=%zu (%.1f%%), Range=[%d,%d]\n",
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level, sub_size, hl_zeros, 100.0*hl_zeros/sub_size,
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hl_pos, 100.0*hl_pos/sub_size, hl_neg, 100.0*hl_neg/sub_size, hl_min, hl_max);
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printf(" HH%d: Total=%zu, Zeros=%zu (%.1f%%), Pos=%zu (%.1f%%), Neg=%zu (%.1f%%), Range=[%d,%d]\n\n",
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level, sub_size, hh_zeros, 100.0*hh_zeros/sub_size,
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hh_pos, 100.0*hh_pos/sub_size, hh_neg, 100.0*hh_neg/sub_size, hh_min, hh_max);
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for (int y = hh_y0; y < hh_y1; y++) {
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for (int x = hh_x0; x < hh_x1; x++) {
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int16_t val = GET_COEFF(x, y);
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if (val == 0) hh_zeros++;
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else if (val == 1 || val == -1) hh_ones++;
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else if (val > 0) hh_pos++;
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else hh_neg++;
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if (val < hh_min) hh_min = val;
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if (val > hh_max) hh_max = val;
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}
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}
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size_t sub_total = half_w * half_h;
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printf("Level %d subbands (%dx%d each):\n", level, half_w, half_h);
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printf(" LH%d: Total=%zu, Zeros=%zu (%.1f%%), Ones=%zu (%.1f%%), Pos=%zu (%.1f%%), Neg=%zu (%.1f%%), Range=[%d,%d]\n",
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level, sub_total, lh_zeros, 100.0*lh_zeros/sub_total, lh_ones, 100.0*lh_ones/sub_total,
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lh_pos, 100.0*lh_pos/sub_total, lh_neg, 100.0*lh_neg/sub_total, lh_min, lh_max);
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printf(" HL%d: Total=%zu, Zeros=%zu (%.1f%%), Ones=%zu (%.1f%%), Pos=%zu (%.1f%%), Neg=%zu (%.1f%%), Range=[%d,%d]\n",
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level, sub_total, hl_zeros, 100.0*hl_zeros/sub_total, hl_ones, 100.0*hl_ones/sub_total,
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hl_pos, 100.0*hl_pos/sub_total, hl_neg, 100.0*hl_neg/sub_total, hl_min, hl_max);
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printf(" HH%d: Total=%zu, Zeros=%zu (%.1f%%), Ones=%zu (%.1f%%), Pos=%zu (%.1f%%), Neg=%zu (%.1f%%), Range=[%d,%d]\n\n",
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level, sub_total, hh_zeros, 100.0*hh_zeros/sub_total, hh_ones, 100.0*hh_ones/sub_total,
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hh_pos, 100.0*hh_pos/sub_total, hh_neg, 100.0*hh_neg/sub_total, hh_min, hh_max);
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}
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#undef GET_COEFF
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// Write PPM image
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FILE *fp_out = fopen(output_file, "wb");
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if (!fp_out) {
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@@ -248,8 +285,10 @@ int main(int argc, char *argv[]) {
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printf("\nWrote %dx%d image to %s\n", width, height, output_file);
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printf("Color mapping:\n");
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printf(" Black: Zero coefficients\n");
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printf(" Red→Yellow: Positive coefficients (logarithmic)\n");
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printf(" Blue→Cyan: Negative coefficients (logarithmic)\n");
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printf(" Light Green (#55FF55): +1 coefficients\n");
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printf(" Dark Green (#00AA00): -1 coefficients\n");
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printf(" Red→Yellow: Positive coefficients > +1 (logarithmic)\n");
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printf(" Blue→Cyan: Negative coefficients < -1 (logarithmic)\n");
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return 0;
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}
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