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37 lines
944 B
37 lines
944 B
#include "utils.h"
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#include <stdio.h>
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#include <algorithm>
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#include <cmath>
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// calculate score based on laplacians in one area
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uint16_t get_lapmap_one(const int16_t *lap, int x_pitch, int y_pitch) {
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const int size = x_pitch * y_pitch;
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// avg and max of roi
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int16_t max = 0;
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int sum = 0;
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for (int i = 0; i < size; ++i) {
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const int16_t v = lap[i % x_pitch + (i / x_pitch) * x_pitch];
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sum += v;
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if (v > max) max = v;
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}
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const int16_t mean = sum / size;
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// var of roi
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int var = 0;
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for (int i = 0; i < size; ++i) {
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var += std::pow(lap[i % x_pitch + (i / x_pitch) * x_pitch] - mean, 2);
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}
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const float fvar = (float)var / size;
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return std::min(5 * fvar + max, (float)65535);
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}
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bool is_blur(const uint16_t *lapmap, const size_t size) {
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float bad_sum = 0;
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for (int i = 0; i < size; i++) {
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if (lapmap[i] < LM_THRESH) {
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bad_sum += 1 / (float)size;
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}
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}
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return (bad_sum > LM_PREC_THRESH);
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} |