64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
#pragma once
|
|
|
|
#include <array>
|
|
|
|
#include "color.h"
|
|
#include "coord.h"
|
|
#include "image.h"
|
|
#include "lut.h"
|
|
|
|
// Maximum LUT size that has each point adjacent to at least one ColorChecker color.
|
|
typedef Lut3d<4, 3, 3> ColorCheckerLut3d;
|
|
|
|
constexpr std::array<Color, 24> kColorCheckerSrgb = {{
|
|
{0x7300, 0x5200, 0x4400},
|
|
{0xc200, 0x9600, 0x8200},
|
|
{0x6200, 0x7a00, 0x9d00},
|
|
{0x5700, 0x6c00, 0x4300},
|
|
{0x8500, 0x8000, 0xb100},
|
|
{0x6700, 0xbd00, 0xaa00},
|
|
{0xd600, 0x7e00, 0x2c00},
|
|
{0x5000, 0x5b00, 0xa600},
|
|
{0xc100, 0x5a00, 0x6300},
|
|
{0x5e00, 0x3c00, 0x6c00},
|
|
{0x9d00, 0xbc00, 0x4000},
|
|
{0xe000, 0xa300, 0x2e00},
|
|
{0x3800, 0x3d00, 0x9600},
|
|
{0x4600, 0x9400, 0x4900},
|
|
{0xaf00, 0x3600, 0x3c00},
|
|
{0xe700, 0xc700, 0x1f00},
|
|
{0xbb00, 0x5600, 0x9500},
|
|
{0x0800, 0x8500, 0xa100},
|
|
{0xf300, 0xf300, 0xf200},
|
|
{0xc800, 0xc800, 0xc800},
|
|
{0xa000, 0xa000, 0xa000},
|
|
{0x7a00, 0x7a00, 0x7900},
|
|
{0x5500, 0x5500, 0x5500},
|
|
{0x3400, 0x3400, 0x3400},
|
|
}};
|
|
|
|
template <uint32_t X, uint32_t Y>
|
|
std::array<Coord, kColorCheckerSrgb.size()> ColorCheckerClosest(const Image<X, Y>& image) {
|
|
std::array<Coord, kColorCheckerSrgb.size()> closest;
|
|
std::array<uint32_t, kColorCheckerSrgb.size()> diff;
|
|
diff.fill(UINT32_MAX);
|
|
|
|
for (uint32_t y = 0; y < Y; ++y) {
|
|
const auto& row = image.at(y);
|
|
|
|
for (uint32_t x = 0; x < X; ++x) {
|
|
const auto& pixel = row.at(x);
|
|
|
|
for (uint32_t cc = 0; cc < kColorCheckerSrgb.size(); ++cc) {
|
|
auto pixel_diff = pixel.Difference(kColorCheckerSrgb.at(cc));
|
|
if (pixel_diff < diff.at(cc)) {
|
|
diff.at(cc) = pixel_diff;
|
|
closest.at(cc) = {x, y};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return closest;
|
|
}
|