#include "igs_color_rgb_hsv.h"
namespace {
void pixel_rgba_(const double red_in, const double gre_in, const double blu_in,
double &red_out, double &gre_out, double &blu_out,
const double hue_pivot // 0.0 ...0...360...
,
const double hue_scale // 1.0 ...1...
,
const double hue_shift // 0.0 ...0...360...
,
const double sat_pivot // 0.0 ...0...1...
,
const double sat_scale // 1.0 ...1...
,
const double sat_shift // 0.0 ...0...1...
,
const double val_pivot // 0.0 ...0...1...
,
const double val_scale // 1.0 ...1...
,
const double val_shift // 0.0 ...0...1...
) {
double hue, sat, val;
igs::color::rgb_to_hsv(red_in, gre_in, blu_in, hue, sat, val);
if ((1.0 != hue_scale) || (0.0 != hue_shift)) {
hue -= hue_pivot;
while (hue < -180.0) {
hue += 360.0;
}
while (180.0 <= hue) {
hue -= 360.0;
}
hue *= hue_scale;
hue += hue_pivot;
hue += hue_shift;
while (hue < 0.0) {
hue += 360.0;
}
while (360.0 <= hue) {
hue -= 360.0;
}
}
if ((1.0 != sat_scale) || (0.0 != sat_shift)) {
sat -= sat_pivot;
sat *= sat_scale;
sat += sat_pivot;
sat += sat_shift;
sat = (sat < 0.0) ? 0.0 : sat;
// sat = (sat < 0.0) ? 0.0 : ((1.0 < sat) ? 1.0 : sat);
}
if ((1.0 != val_scale) || (0.0 != val_shift)) {
val -= val_pivot;
val *= val_scale;
val += val_pivot;
val += val_shift;
// val = (val < 0.0) ? 0.0 : ((1.0 < val) ? 1.0 : val);
}
igs::color::hsv_to_rgb(hue, sat, val, red_out, gre_out, blu_out);
}
} // namespace
//------------------------------------------------------------
#include <limits> /* std::numeric_limits */
#include "igs_ifx_common.h" /* igs::image::rgba */
#include "igs_hsv_adjust.h"
namespace {
/* raster画像にノイズをのせる */
void change_(float *image_array, const int height, const int width,
const int channels,
const float *ref, /* 求める画像(out)と同じ高さ、幅、チャンネル数 */
const double hue_pivot, const double hue_scale,
const double hue_shift, const double sat_pivot,
const double sat_scale, const double sat_shift,
const double val_pivot, const double val_scale,
const double val_shift, const bool add_blend_sw) {
// const int t_max = std::numeric_limits<IT>::max();
// const double div_val = static_cast<double>(t_max);
// const double mul_val = static_cast<double>(t_max) + 0.999999;
const int pixsize = height * width;
// const int r_max = std::numeric_limits<RT>::max();
if (igs::image::rgba::siz == channels) {
using namespace igs::image::rgba;
for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
/* 変化量初期値 */
float refv = 1.f;
/* 参照画像によるピクセル単位の画像変化量を得る */
if (ref != nullptr) {
refv *= (*ref);
ref++; /* continue;の前に行うこと */
}
/* 加算合成で、Alpha値ゼロならRGB値を計算する必要はない */
if (add_blend_sw && (0.f == image_array[alp])) {
continue;
}
/* 加算合成でなくAlpha合成の時は、
Alpha値がゼロでもRGB値は存在する(してもよい) */
/* pivot,scale,shiftによってRGB値を変化する */
double rr, gg, bb;
pixel_rgba_(image_array[red], image_array[gre], image_array[blu], rr, gg,
bb, hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
sat_shift, val_pivot, val_scale, val_shift);
/* 加算合成で、その値がMaxでなければ変化量に乗算 */
if (add_blend_sw && (image_array[alp] < 1.f)) {
refv *= image_array[alp];
}
/* ピクセル単位の変化量があれば、RGBを調整する */
if ((ref != 0) || (add_blend_sw && (image_array[alp] < 1.f))) {
rr = image_array[red] + (rr - image_array[red]) * refv;
gg = image_array[gre] + (gg - image_array[gre]) * refv;
bb = image_array[blu] + (bb - image_array[blu]) * refv;
}
/* 結果をRGBに戻す */
image_array[red] = rr;
image_array[gre] = gg;
image_array[blu] = bb;
}
} else if (igs::image::rgb::siz == channels) {
using namespace igs::image::rgb;
for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
float refv = 1.f;
if (ref != 0) {
refv *= (*ref);
ref++;
}
// const IT *const ia = image_array;
// const double rr1 = static_cast<double>(ia[red]) / div_val;
// const double gg1 = static_cast<double>(ia[gre]) / div_val;
// const double bb1 = static_cast<double>(ia[blu]) / div_val;
double rr, gg, bb;
pixel_rgba_(image_array[red], image_array[gre], image_array[blu], rr, gg,
bb, hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
sat_shift, val_pivot, val_scale, val_shift);
if (ref != nullptr) {
rr = image_array[red] + (rr - image_array[red]) * refv;
gg = image_array[gre] + (gg - image_array[gre]) * refv;
bb = image_array[blu] + (bb - image_array[blu]) * refv;
}
image_array[red] = rr;
image_array[gre] = gg;
image_array[blu] = bb;
}
} else if (1 == channels) { /* grayscale */
for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
float refv = 1.f;
if (ref != nullptr) {
refv *= (*ref);
ref++;
}
double li =
(*image_array - val_pivot) * val_scale + val_pivot + val_shift;
if (ref != nullptr) {
li = *image_array + (li - *image_array) * refv;
}
*image_array = li;
}
}
}
} // namespace
#include <stdexcept> /* std::domain_error */
void igs::hsv_adjust::change(
float *image_array, const int height, const int width, const int channels,
const float *ref, /* 求める画像と同じ高、幅、channels数 */
const double hue_pivot, const double hue_scale, const double hue_shift,
const double sat_pivot, const double sat_scale, const double sat_shift,
const double val_pivot, const double val_scale, const double val_shift,
const bool add_blend_sw) {
if ((1.0 == hue_scale) && (0.0 == hue_shift) && (1.0 == sat_scale) &&
(0.0 == sat_shift) && (1.0 == val_scale) && (0.0 == val_shift)) {
return;
}
if ((igs::image::rgba::siz != channels) &&
(igs::image::rgb::siz != channels) && (1 != channels) /* grayscale */
) {
throw std::domain_error("Bad channels,Not rgba/rgb/grayscale");
}
change_(image_array, height, width, channels, ref, hue_pivot, hue_scale,
hue_shift, sat_pivot, sat_scale, sat_shift, val_pivot, val_scale,
val_shift, add_blend_sw);
/* rgb(a)画像にhsv(a)でドットノイズを加える */
/*
if ((std::numeric_limits<unsigned char>::digits == bits) &&
((std::numeric_limits<unsigned char>::digits == ref_bits) ||
(0 == ref_bits))) {
change_template_(image_array, height, width, channels, ref, ref_mode,
hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
sat_shift, val_pivot, val_scale, val_shift, add_blend_sw);
} else if ((std::numeric_limits<unsigned short>::digits == bits) &&
((std::numeric_limits<unsigned char>::digits == ref_bits) ||
(0 == ref_bits))) {
change_template_(reinterpret_cast<unsigned short *>(image_array), height,
width, channels, ref, ref_mode, hue_pivot, hue_scale,
hue_shift, sat_pivot, sat_scale, sat_shift, val_pivot,
val_scale, val_shift, add_blend_sw);
} else if ((std::numeric_limits<unsigned short>::digits == bits) &&
(std::numeric_limits<unsigned short>::digits == ref_bits)) {
change_template_(reinterpret_cast<unsigned short *>(image_array), height,
width, channels,
reinterpret_cast<const unsigned short *>(ref), ref_mode,
hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
sat_shift, val_pivot, val_scale, val_shift, add_blend_sw);
} else if ((std::numeric_limits<unsigned char>::digits == bits) &&
(std::numeric_limits<unsigned short>::digits == ref_bits)) {
change_template_(image_array, height, width, channels,
reinterpret_cast<const unsigned short *>(ref), ref_mode,
hue_pivot, hue_scale, hue_shift, sat_pivot, sat_scale,
sat_shift, val_pivot, val_scale, val_shift, add_blend_sw);
} else {
throw std::domain_error("Bad bits,Not uchar/ushort");
}
*/
}