245 lines
9.3 KiB
C++
245 lines
9.3 KiB
C++
#include "igs_color_rgb_hsv.h"
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namespace {
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void pixel_rgba_(const double red_in, const double gre_in, const double blu_in,
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double &red_out, double &gre_out, double &blu_out,
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const double hue_pivot // 0.0 ...0...360...
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,
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const double hue_scale // 1.0 ...1...
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,
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const double hue_shift // 0.0 ...0...360...
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,
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const double sat_pivot // 0.0 ...0...1...
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,
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const double sat_scale // 1.0 ...1...
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,
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const double sat_shift // 0.0 ...0...1...
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,
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const double val_pivot // 0.0 ...0...1...
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,
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const double val_scale // 1.0 ...1...
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,
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const double val_shift // 0.0 ...0...1...
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) {
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double hue, sat, val;
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igs::color::rgb_to_hsv(red_in, gre_in, blu_in, hue, sat, val);
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if ((1.0 != hue_scale) || (0.0 != hue_shift)) {
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hue -= hue_pivot;
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while (hue < -180.0) {
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hue += 360.0;
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}
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while (180.0 <= hue) {
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hue -= 360.0;
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}
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hue *= hue_scale;
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hue += hue_pivot;
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hue += hue_shift;
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while (hue < 0.0) {
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hue += 360.0;
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}
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while (360.0 <= hue) {
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hue -= 360.0;
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}
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}
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if ((1.0 != sat_scale) || (0.0 != sat_shift)) {
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sat -= sat_pivot;
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sat *= sat_scale;
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sat += sat_pivot;
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sat += sat_shift;
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sat = (sat < 0.0) ? 0.0 : ((1.0 < sat) ? 1.0 : sat);
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}
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if ((1.0 != val_scale) || (0.0 != val_shift)) {
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val -= val_pivot;
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val *= val_scale;
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val += val_pivot;
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val += val_shift;
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val = (val < 0.0) ? 0.0 : ((1.0 < val) ? 1.0 : val);
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}
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igs::color::hsv_to_rgb(hue, sat, val, red_out, gre_out, blu_out);
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}
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}
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//------------------------------------------------------------
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#include <limits> /* std::numeric_limits */
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#include "igs_ifx_common.h" /* igs::image::rgba */
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#include "igs_hsv_adjust.h"
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namespace {
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/* raster画像にノイズをのせるtemplate */
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template <class IT, class RT>
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void change_template_(
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IT *image_array, const int height, const int width, const int channels
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,
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const RT *ref /* 求める画像(out)と同じ高さ、幅、チャンネル数 */
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,
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const int ref_mode // R,G,B,A,luminance
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,
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const double hue_pivot, const double hue_scale, const double hue_shift,
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const double sat_pivot, const double sat_scale, const double sat_shift,
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const double val_pivot, const double val_scale, const double val_shift
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,
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const bool add_blend_sw) {
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const int t_max = std::numeric_limits<IT>::max();
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const double div_val = static_cast<double>(t_max);
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const double mul_val = static_cast<double>(t_max) + 0.999999;
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const int pixsize = height * width;
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const int r_max = std::numeric_limits<RT>::max();
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if (igs::image::rgba::siz == channels) {
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using namespace igs::image::rgba;
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for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
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/* 変化量初期値 */
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double refv = 1.0;
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/* 参照画像によるピクセル単位の画像変化量を得る */
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if (ref != 0) {
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refv *= igs::color::ref_value(ref, channels, r_max, ref_mode);
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ref += channels; /* continue;の前に行うこと */
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}
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/* 加算合成で、Alpha値ゼロならRGB値を計算する必要はない */
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if (add_blend_sw && (0 == image_array[alp])) {
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continue;
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}
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/* 加算合成でなくAlpha合成の時は、
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Alpha値がゼロでもRGB値は存在する(してもよい) */
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/* RGB値を正規化 */
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const IT *const ia = image_array;
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const double rr1 = static_cast<double>(ia[red]) / div_val;
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const double gg1 = static_cast<double>(ia[gre]) / div_val;
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const double bb1 = static_cast<double>(ia[blu]) / div_val;
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/* pivot,scale,shiftによってRGB値を変化する */
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double rr2, gg2, bb2;
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pixel_rgba_(rr1, gg1, bb1, rr2, gg2, bb2, hue_pivot, hue_scale, hue_shift,
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sat_pivot, sat_scale, sat_shift, val_pivot, val_scale,
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val_shift);
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/* 加算合成で、その値がMaxでなければ変化量に乗算 */
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if (add_blend_sw && (ia[alp] < t_max)) {
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refv *= static_cast<double>(ia[alp]) / div_val;
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}
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/* ピクセル単位の変化量があれば、RGBを調整する */
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if ((ref != 0) || (add_blend_sw && (ia[alp] < t_max))) {
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rr2 = rr1 + (rr2 - rr1) * refv;
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gg2 = gg1 + (gg2 - gg1) * refv;
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bb2 = bb1 + (bb2 - bb1) * refv;
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}
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/* 結果をRGBに戻す */
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image_array[red] = static_cast<IT>(rr2 * mul_val);
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image_array[gre] = static_cast<IT>(gg2 * mul_val);
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image_array[blu] = static_cast<IT>(bb2 * mul_val);
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}
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} else if (igs::image::rgb::siz == channels) {
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using namespace igs::image::rgb;
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for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
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double refv = 1.0;
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if (ref != 0) {
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refv *= igs::color::ref_value(ref, channels, r_max, ref_mode);
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ref += channels;
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}
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const IT *const ia = image_array;
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const double rr1 = static_cast<double>(ia[red]) / div_val;
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const double gg1 = static_cast<double>(ia[gre]) / div_val;
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const double bb1 = static_cast<double>(ia[blu]) / div_val;
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double rr2, gg2, bb2;
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pixel_rgba_(rr1, gg1, bb1, rr2, gg2, bb2, hue_pivot, hue_scale, hue_shift,
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sat_pivot, sat_scale, sat_shift, val_pivot, val_scale,
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val_shift);
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if (ref != 0) {
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rr2 = rr1 + (rr2 - rr1) * refv;
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gg2 = gg1 + (gg2 - gg1) * refv;
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bb2 = bb1 + (bb2 - bb1) * refv;
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}
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image_array[red] = static_cast<IT>(rr2 * mul_val);
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image_array[gre] = static_cast<IT>(gg2 * mul_val);
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image_array[blu] = static_cast<IT>(bb2 * mul_val);
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}
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} else if (1 == channels) { /* grayscale */
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for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
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double refv = 1.0;
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if (ref != 0) {
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refv *= igs::color::ref_value(ref, channels, r_max, ref_mode);
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ref += channels;
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}
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double li1 = static_cast<double>(image_array[0]) / div_val,
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li2 = (li1 - val_pivot) * val_scale + val_pivot + val_shift;
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li2 = (li2 < 0.0) ? 0.0 : ((1.0 < li2) ? 1.0 : li2);
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if (ref != 0) {
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li2 = li1 + (li2 - li1) * refv;
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}
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image_array[0] = static_cast<IT>(li2 * mul_val);
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}
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}
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}
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}
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#include <stdexcept> /* std::domain_error */
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void igs::hsv_adjust::change(
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unsigned char *image_array, const int height, const int width,
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const int channels, const int bits
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,
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const unsigned char *ref /* 求める画像と同じ高、幅、channels数 */
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,
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const int ref_bits /* refがゼロのときはここもゼロ */
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,
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const int ref_mode /* 0=R,1=G,2=B,3=A,4=Luminance,5=Nothing */
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,
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const double hue_pivot, const double hue_scale, const double hue_shift,
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const double sat_pivot, const double sat_scale, const double sat_shift,
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const double val_pivot, const double val_scale, const double val_shift
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,
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const bool add_blend_sw) {
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if ((1.0 == hue_scale) && (0.0 == hue_shift) && (1.0 == sat_scale) &&
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(0.0 == sat_shift) && (1.0 == val_scale) && (0.0 == val_shift)) {
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return;
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}
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if ((igs::image::rgba::siz != channels) &&
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(igs::image::rgb::siz != channels) && (1 != channels) /* grayscale */
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) {
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throw std::domain_error("Bad channels,Not rgba/rgb/grayscale");
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}
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/* rgb(a)画像にhsv(a)でドットノイズを加える */
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if ((std::numeric_limits<unsigned char>::digits == bits) &&
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((std::numeric_limits<unsigned char>::digits == ref_bits) ||
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(0 == ref_bits))) {
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change_template_(image_array, height, width, channels, ref, ref_mode,
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hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
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sat_shift, val_pivot, val_scale, val_shift, add_blend_sw);
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} else if ((std::numeric_limits<unsigned short>::digits == bits) &&
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((std::numeric_limits<unsigned char>::digits == ref_bits) ||
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(0 == ref_bits))) {
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change_template_(reinterpret_cast<unsigned short *>(image_array), height,
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width, channels, ref, ref_mode, hue_pivot, hue_scale,
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hue_shift, sat_pivot, sat_scale, sat_shift, val_pivot,
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val_scale, val_shift, add_blend_sw);
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} else if ((std::numeric_limits<unsigned short>::digits == bits) &&
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(std::numeric_limits<unsigned short>::digits == ref_bits)) {
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change_template_(reinterpret_cast<unsigned short *>(image_array), height,
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width, channels,
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reinterpret_cast<const unsigned short *>(ref), ref_mode,
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hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
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sat_shift, val_pivot, val_scale, val_shift, add_blend_sw);
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} else if ((std::numeric_limits<unsigned char>::digits == bits) &&
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(std::numeric_limits<unsigned short>::digits == ref_bits)) {
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change_template_(image_array, height, width, channels,
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reinterpret_cast<const unsigned short *>(ref), ref_mode,
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hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
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sat_shift, val_pivot, val_scale, val_shift, add_blend_sw);
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} else {
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throw std::domain_error("Bad bits,Not uchar/ushort");
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}
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}
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