141 lines
4.7 KiB
C++
141 lines
4.7 KiB
C++
#include <fstream>
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#include <iostream>
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#include <vector>
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#include "bmp.hpp"
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enum BayerPattern { GRBG, RGGB, BGGR, GBRG };
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const int IN_WIDTH = 1920;
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const int IN_HEIGHT = 1080;
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const int IN_SIZE = IN_WIDTH * IN_HEIGHT;
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const int OUT_WIDTH = 1280;
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const int OUT_HEIGHT = 720;
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const int OUT_SIZE = OUT_WIDTH * OUT_HEIGHT;
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const BayerPattern RAW_TYPE = RGGB;
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const int COLOR_DEPTH = 10;
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// const float red_gain = 1.2f; // Adjust these values as necessary
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// const float green_gain = 0.83f;
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// const float blue_gain = 0.95f;
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int main() {
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std::ifstream in_image;
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in_image.open("./test.RAW", std::ios::in | std::ios::binary);
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auto image = std::vector<std::vector<uint16_t>>(
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IN_HEIGHT, std::vector<uint16_t>(IN_WIDTH, 0));
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for (int y = 0; y < IN_HEIGHT; y++)
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for (int x = 0; x < IN_WIDTH; x++) {
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uint8_t buf[2] = {0};
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in_image.read((char*)buf, sizeof(buf));
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image[y][x] = buf[0] + ((uint16_t)buf[1] << 8);
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}
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BayerPattern raw_type = RAW_TYPE;
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uint8_t* data =
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new uint8_t[OUT_WIDTH * OUT_HEIGHT * 3]; // RGB24格式像素数据
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for (int32_t y = 0; y < OUT_HEIGHT; ++y) {
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for (int32_t x = 0; x < OUT_WIDTH; ++x) {
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int32_t index = (y * OUT_WIDTH + x) * 3;
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uint16_t red = 0, green = 0, blue = 0;
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uint16_t data_cache[9] = {0};
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for (int i = 0; i < 3; i++)
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for (int j = 0; j < 3; j++) {
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data_cache[i * 3 + j] = image[y + i][x + j];
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}
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// data case 0 case 1 case 2 case 3
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// 0 1 2 G R G R G R B G B G B G
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// 3 4 5 B G B G B G G R G R G R
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// 6 7 8 G R G R G R B G B G B G
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switch (raw_type) {
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case 0: // Missing B, R on G
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red = (data_cache[1] + data_cache[7]) / 2;
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blue = (data_cache[3] + data_cache[5]) / 2;
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green = data_cache[4];
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break;
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case 1: // Missing G, R on B
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green = (data_cache[1] + data_cache[3] + data_cache[5] +
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data_cache[7]) /
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4;
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red = (data_cache[0] + data_cache[2] + data_cache[6] +
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data_cache[8]) /
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4;
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blue = data_cache[4];
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break;
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case 2: // Missing G, B on R
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green = (data_cache[1] + data_cache[3] + data_cache[5] +
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data_cache[7]) /
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4;
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blue = (data_cache[0] + data_cache[2] + data_cache[6] +
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data_cache[8]) /
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4;
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red = data_cache[4];
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break;
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case 3: // Missing B, R on G
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blue = (data_cache[1] + data_cache[7]) / 2;
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red = (data_cache[3] + data_cache[5]) / 2;
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green = data_cache[4];
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break;
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}
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printf(
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"x=%4d, y=%4d, red=0x%03x, green=0x%03x, blue=0x%03x, "
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"raw_type=%d\n",
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x, y, red, green, blue, raw_type);
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switch (raw_type) {
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case 0:
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raw_type = RGGB;
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break;
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case 1:
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raw_type = GRBG;
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break;
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case 2:
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raw_type = GBRG;
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break;
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case 3:
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raw_type = BGGR;
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break;
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}
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data[index + 0] = red >> (COLOR_DEPTH - 8); // R
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data[index + 1] = green >> (COLOR_DEPTH - 8); // G
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data[index + 2] = blue >> (COLOR_DEPTH - 8); // B
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}
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if (y % 2) {
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raw_type = RAW_TYPE;
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} else {
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switch (RAW_TYPE) {
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case 0:
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raw_type = BGGR;
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break;
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case 1:
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raw_type = GBRG;
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break;
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case 2:
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raw_type = GRBG;
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break;
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case 3:
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raw_type = RGGB;
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break;
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}
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}
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}
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// for (int i = 0; i < OUT_WIDTH * OUT_HEIGHT * 3; i += 3) {
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// data[i + 0] = std::min(255, static_cast<int>(data[i + 0] * red_gain));
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// data[i + 1] = std::min(255, static_cast<int>(data[i + 1] * green_gain));
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// data[i + 2] = std::min(255, static_cast<int>(data[i + 2] * blue_gain));
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// }
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write_bmp("test.bmp", data, OUT_WIDTH, OUT_HEIGHT);
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delete[] data;
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return 0;
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}
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