diff options
Diffstat (limited to 'plugins/freeimage/Source/FreeImage/tmoReinhard05.cpp')
| -rw-r--r-- | plugins/freeimage/Source/FreeImage/tmoReinhard05.cpp | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/plugins/freeimage/Source/FreeImage/tmoReinhard05.cpp b/plugins/freeimage/Source/FreeImage/tmoReinhard05.cpp deleted file mode 100644 index 15c48a931a..0000000000 --- a/plugins/freeimage/Source/FreeImage/tmoReinhard05.cpp +++ /dev/null @@ -1,260 +0,0 @@ -// ==========================================================
-// Tone mapping operator (Reinhard, 2005)
-//
-// Design and implementation by
-// - Hervé Drolon (drolon@infonie.fr)
-// - Mihail Naydenov (mnaydenov@users.sourceforge.net)
-//
-// This file is part of FreeImage 3
-//
-// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
-// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
-// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
-// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
-// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
-// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
-// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
-// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
-// THIS DISCLAIMER.
-//
-// Use at your own risk!
-// ==========================================================
-
-#include "FreeImage.h"
-#include "Utilities.h"
-#include "ToneMapping.h"
-
-// ----------------------------------------------------------
-// Global and/or local tone mapping operator
-// References:
-// [1] Erik Reinhard and Kate Devlin, 'Dynamic Range Reduction Inspired by Photoreceptor Physiology',
-// IEEE Transactions on Visualization and Computer Graphics, 11(1), Jan/Feb 2005.
-// [2] Erik Reinhard, 'Parameter estimation for photographic tone reproduction',
-// Journal of Graphics Tools, vol. 7, no. 1, pp. 45–51, 2003.
-// ----------------------------------------------------------
-
-/**
-Tone mapping operator
-@param dib Input / Output RGBF image
-@param Y Input luminance image version of dib
-@param f Overall intensity in range [-8:8] : default to 0
-@param m Contrast in range [0.3:1) : default to 0
-@param a Adaptation in range [0:1] : default to 1
-@param c Color correction in range [0:1] : default to 0
-@return Returns TRUE if successful, returns FALSE otherwise
-@see LuminanceFromY
-*/
-static BOOL
-ToneMappingReinhard05(FIBITMAP *dib, FIBITMAP *Y, float f, float m, float a, float c) {
- float Cav[3]; // channel average
- float Lav = 0; // average luminance
- float Llav = 0; // log average luminance
- float minLum = 1; // min luminance
- float maxLum = 1; // max luminance
-
- float L; // pixel luminance
- float I_g, I_l; // global and local light adaptation
- float I_a; // interpolated pixel light adaptation
- float k; // key (low-key means overall dark image, high-key means overall light image)
-
- // check input parameters
-
- if((FreeImage_GetImageType(dib) != FIT_RGBF) || (FreeImage_GetImageType(Y) != FIT_FLOAT)) {
- return FALSE;
- }
-
- if(f < -8) f = -8; if(f > 8) f = 8;
- if(m < 0) m = 0; if(m > 1) m = 1;
- if(a < 0) a = 0; if(a > 1) a = 1;
- if(c < 0) c = 0; if(c > 1) c = 1;
-
- const unsigned width = FreeImage_GetWidth(dib);
- const unsigned height = FreeImage_GetHeight(dib);
-
- const unsigned dib_pitch = FreeImage_GetPitch(dib);
- const unsigned y_pitch = FreeImage_GetPitch(Y);
-
- int i;
- unsigned x, y;
- BYTE *bits = NULL, *Ybits = NULL;
-
- // get statistics about the data (but only if its really needed)
-
- f = exp(-f);
- if((m == 0) || (a != 1) && (c != 1)) {
- // avoid these calculations if its not needed after ...
- LuminanceFromY(Y, &maxLum, &minLum, &Lav, &Llav);
- k = (log(maxLum) - Llav) / (log(maxLum) - log(minLum));
- if(k < 0) {
- // pow(k, 1.4F) is undefined ...
- // there's an ambiguity about the calculation of Llav between Reinhard papers and the various implementations ...
- // try another world adaptation luminance formula using instead 'worldLum = log(Llav)'
- k = (log(maxLum) - log(Llav)) / (log(maxLum) - log(minLum));
- if(k < 0) m = 0.3F;
- }
- }
- m = (m > 0) ? m : (float)(0.3 + 0.7 * pow(k, 1.4F));
-
- float max_color = -1e6F;
- float min_color = +1e6F;
-
- // tone map image
-
- bits = (BYTE*)FreeImage_GetBits(dib);
- Ybits = (BYTE*)FreeImage_GetBits(Y);
-
- if((a == 1) && (c == 0)) {
- // when using default values, use a fastest code
-
- for(y = 0; y < height; y++) {
- float *Y = (float*)Ybits;
- float *color = (float*)bits;
-
- for(x = 0; x < width; x++) {
- I_a = Y[x]; // luminance(x, y)
- for (i = 0; i < 3; i++) {
- *color /= ( *color + pow(f * I_a, m) );
-
- max_color = (*color > max_color) ? *color : max_color;
- min_color = (*color < min_color) ? *color : min_color;
-
- color++;
- }
- }
- // next line
- bits += dib_pitch;
- Ybits += y_pitch;
- }
- } else {
- // complete algorithm
-
- // channel averages
-
- Cav[0] = Cav[1] = Cav[2] = 0;
- if((a != 1) && (c != 0)) {
- // channel averages are not needed when (a == 1) or (c == 0)
- bits = (BYTE*)FreeImage_GetBits(dib);
- for(y = 0; y < height; y++) {
- float *color = (float*)bits;
- for(x = 0; x < width; x++) {
- for(i = 0; i < 3; i++) {
- Cav[i] += *color;
- color++;
- }
- }
- // next line
- bits += dib_pitch;
- }
- const float image_size = (float)width * height;
- for(i = 0; i < 3; i++) {
- Cav[i] /= image_size;
- }
- }
-
- // perform tone mapping
-
- bits = (BYTE*)FreeImage_GetBits(dib);
- for(y = 0; y < height; y++) {
- const float *Y = (float*)Ybits;
- float *color = (float*)bits;
-
- for(x = 0; x < width; x++) {
- L = Y[x]; // luminance(x, y)
- for (i = 0; i < 3; i++) {
- I_l = c * *color + (1-c) * L;
- I_g = c * Cav[i] + (1-c) * Lav;
- I_a = a * I_l + (1-a) * I_g;
- *color /= ( *color + pow(f * I_a, m) );
-
- max_color = (*color > max_color) ? *color : max_color;
- min_color = (*color < min_color) ? *color : min_color;
-
- color++;
- }
- }
- // next line
- bits += dib_pitch;
- Ybits += y_pitch;
- }
- }
-
- // normalize intensities
-
- if(max_color != min_color) {
- bits = (BYTE*)FreeImage_GetBits(dib);
- const float range = max_color - min_color;
- for(y = 0; y < height; y++) {
- float *color = (float*)bits;
- for(x = 0; x < width; x++) {
- for(i = 0; i < 3; i++) {
- *color = (*color - min_color) / range;
- color++;
- }
- }
- // next line
- bits += dib_pitch;
- }
- }
-
- return TRUE;
-}
-
-// ----------------------------------------------------------
-// Main algorithm
-// ----------------------------------------------------------
-
-/**
-Apply the global/local tone mapping operator to a RGBF image and convert to 24-bit RGB<br>
-User parameters control intensity, contrast, and level of adaptation
-@param src Input RGBF image
-@param intensity Overall intensity in range [-8:8] : default to 0
-@param contrast Contrast in range [0.3:1) : default to 0
-@param adaptation Adaptation in range [0:1] : default to 1
-@param color_correction Color correction in range [0:1] : default to 0
-@return Returns a 24-bit RGB image if successful, returns NULL otherwise
-*/
-FIBITMAP* DLL_CALLCONV
-FreeImage_TmoReinhard05Ex(FIBITMAP *src, double intensity, double contrast, double adaptation, double color_correction) {
- if(!FreeImage_HasPixels(src)) return NULL;
-
- // working RGBF variable
- FIBITMAP *dib = NULL, *Y = NULL;
-
- dib = FreeImage_ConvertToRGBF(src);
- if(!dib) return NULL;
-
- // get the Luminance channel
- Y = ConvertRGBFToY(dib);
- if(!Y) {
- FreeImage_Unload(dib);
- return NULL;
- }
-
- // perform the tone mapping
- ToneMappingReinhard05(dib, Y, (float)intensity, (float)contrast, (float)adaptation, (float)color_correction);
- // not needed anymore
- FreeImage_Unload(Y);
- // clamp image highest values to display white, then convert to 24-bit RGB
- FIBITMAP *dst = ClampConvertRGBFTo24(dib);
-
- // clean-up and return
- FreeImage_Unload(dib);
-
- // copy metadata from src to dst
- FreeImage_CloneMetadata(dst, src);
-
- return dst;
-}
-
-/**
-Apply the global tone mapping operator to a RGBF image and convert to 24-bit RGB<br>
-User parameters control intensity and contrast
-@param src Input RGBF image
-@param intensity Overall intensity in range [-8:8] : default to 0
-@param contrast Contrast in range [0.3:1) : default to 0
-@return Returns a 24-bit RGB image if successful, returns NULL otherwise
-*/
-FIBITMAP* DLL_CALLCONV
-FreeImage_TmoReinhard05(FIBITMAP *src, double intensity, double contrast) {
- return FreeImage_TmoReinhard05Ex(src, intensity, contrast, 1, 0);
-}
|