提交 838624bf 编写于 作者: A Alexander Alekhin

Merge pull request #13362 from alalek:photo_move_durand_contrib

......@@ -180,17 +180,6 @@
volume = {9},
publisher = {Walter de Gruyter}
}
@inproceedings{DD02,
author = {Durand, Fr{\'e}do and Dorsey, Julie},
title = {Fast bilateral filtering for the display of high-dynamic-range images},
booktitle = {ACM Transactions on Graphics (TOG)},
year = {2002},
pages = {257--266},
volume = {21},
number = {3},
publisher = {ACM},
url = {https://www.researchgate.net/profile/Julie_Dorsey/publication/220184746_Fast_Bilateral_Filtering_for_the_Display_of_High_-_dynamic_-_range_Images/links/54566b000cf26d5090a95f96/Fast-Bilateral-Filtering-for-the-Display-of-High-dynamic-range-Images.pdf}
}
@inproceedings{DM03,
author = {Drago, Fr{\'e}d{\'e}ric and Myszkowski, Karol and Annen, Thomas and Chiba, Norishige},
title = {Adaptive logarithmic mapping for displaying high contrast scenes},
......
......@@ -85,10 +85,8 @@ we will later have to clip the data in order to avoid overflow.
@code{.py}
# Tonemap HDR image
tonemap1 = cv.createTonemapDurand(gamma=2.2)
tonemap1 = cv.createTonemap(gamma=2.2)
res_debevec = tonemap1.process(hdr_debevec.copy())
tonemap2 = cv.createTonemapDurand(gamma=1.3)
res_robertson = tonemap2.process(hdr_robertson.copy())
@endcode
### 4. Merge exposures using Mertens fusion
......@@ -173,5 +171,5 @@ Additional Resources
Exercises
---------
1. Try all tonemap algorithms: cv::TonemapDrago, cv::TonemapDurand, cv::TonemapMantiuk and cv::TonemapReinhard
1. Try all tonemap algorithms: cv::TonemapDrago, cv::TonemapMantiuk and cv::TonemapReinhard
2. Try changing the parameters in the HDR calibration and tonemap methods.
......@@ -171,7 +171,7 @@ Now it's time to look at the results. Note that HDR image can't be stored in one
formats, so we save it to Radiance image (.hdr). Also all HDR imaging functions return results in
[0, 1] range so we should multiply result by 255.
You can try other tonemap algorithms: cv::TonemapDrago, cv::TonemapDurand, cv::TonemapMantiuk and cv::TonemapReinhard
You can try other tonemap algorithms: cv::TonemapDrago, cv::TonemapMantiuk and cv::TonemapReinhard
You can also adjust the parameters in the HDR calibration and tonemap methods for your own photos.
Results
......
......@@ -376,43 +376,6 @@ results, default value is 0.85.
*/
CV_EXPORTS_W Ptr<TonemapDrago> createTonemapDrago(float gamma = 1.0f, float saturation = 1.0f, float bias = 0.85f);
/** @brief This algorithm decomposes image into two layers: base layer and detail layer using bilateral filter
and compresses contrast of the base layer thus preserving all the details.
This implementation uses regular bilateral filter from opencv.
Saturation enhancement is possible as in ocvTonemapDrago.
For more information see @cite DD02 .
*/
class CV_EXPORTS_W TonemapDurand : public Tonemap
{
public:
CV_WRAP virtual float getSaturation() const = 0;
CV_WRAP virtual void setSaturation(float saturation) = 0;
CV_WRAP virtual float getContrast() const = 0;
CV_WRAP virtual void setContrast(float contrast) = 0;
CV_WRAP virtual float getSigmaSpace() const = 0;
CV_WRAP virtual void setSigmaSpace(float sigma_space) = 0;
CV_WRAP virtual float getSigmaColor() const = 0;
CV_WRAP virtual void setSigmaColor(float sigma_color) = 0;
};
/** @brief Creates TonemapDurand object
@param gamma gamma value for gamma correction. See createTonemap
@param contrast resulting contrast on logarithmic scale, i. e. log(max / min), where max and min
are maximum and minimum luminance values of the resulting image.
@param saturation saturation enhancement value. See createTonemapDrago
@param sigma_space bilateral filter sigma in color space
@param sigma_color bilateral filter sigma in coordinate space
*/
CV_EXPORTS_W Ptr<TonemapDurand>
createTonemapDurand(float gamma = 1.0f, float contrast = 4.0f, float saturation = 1.0f, float sigma_space = 2.0f, float sigma_color = 2.0f);
/** @brief This is a global tonemapping operator that models human visual system.
......
......@@ -193,94 +193,6 @@ Ptr<TonemapDrago> createTonemapDrago(float gamma, float saturation, float bias)
return makePtr<TonemapDragoImpl>(gamma, saturation, bias);
}
class TonemapDurandImpl CV_FINAL : public TonemapDurand
{
public:
TonemapDurandImpl(float _gamma, float _contrast, float _saturation, float _sigma_color, float _sigma_space) :
name("TonemapDurand"),
gamma(_gamma),
contrast(_contrast),
saturation(_saturation),
sigma_color(_sigma_color),
sigma_space(_sigma_space)
{
}
void process(InputArray _src, OutputArray _dst) CV_OVERRIDE
{
CV_INSTRUMENT_REGION();
Mat src = _src.getMat();
CV_Assert(!src.empty());
_dst.create(src.size(), CV_32FC3);
Mat img = _dst.getMat();
Ptr<Tonemap> linear = createTonemap(1.0f);
linear->process(src, img);
Mat gray_img;
cvtColor(img, gray_img, COLOR_RGB2GRAY);
Mat log_img;
log_(gray_img, log_img);
Mat map_img;
bilateralFilter(log_img, map_img, -1, sigma_color, sigma_space);
double min, max;
minMaxLoc(map_img, &min, &max);
float scale = contrast / static_cast<float>(max - min);
exp(map_img * (scale - 1.0f) + log_img, map_img);
log_img.release();
mapLuminance(img, img, gray_img, map_img, saturation);
pow(img, 1.0f / gamma, img);
}
float getGamma() const CV_OVERRIDE { return gamma; }
void setGamma(float val) CV_OVERRIDE { gamma = val; }
float getSaturation() const CV_OVERRIDE { return saturation; }
void setSaturation(float val) CV_OVERRIDE { saturation = val; }
float getContrast() const CV_OVERRIDE { return contrast; }
void setContrast(float val) CV_OVERRIDE { contrast = val; }
float getSigmaColor() const CV_OVERRIDE { return sigma_color; }
void setSigmaColor(float val) CV_OVERRIDE { sigma_color = val; }
float getSigmaSpace() const CV_OVERRIDE { return sigma_space; }
void setSigmaSpace(float val) CV_OVERRIDE { sigma_space = val; }
void write(FileStorage& fs) const CV_OVERRIDE
{
writeFormat(fs);
fs << "name" << name
<< "gamma" << gamma
<< "contrast" << contrast
<< "sigma_color" << sigma_color
<< "sigma_space" << sigma_space
<< "saturation" << saturation;
}
void read(const FileNode& fn) CV_OVERRIDE
{
FileNode n = fn["name"];
CV_Assert(n.isString() && String(n) == name);
gamma = fn["gamma"];
contrast = fn["contrast"];
sigma_color = fn["sigma_color"];
sigma_space = fn["sigma_space"];
saturation = fn["saturation"];
}
protected:
String name;
float gamma, contrast, saturation, sigma_color, sigma_space;
};
Ptr<TonemapDurand> createTonemapDurand(float gamma, float contrast, float saturation, float sigma_color, float sigma_space)
{
return makePtr<TonemapDurandImpl>(gamma, contrast, saturation, sigma_color, sigma_space);
}
class TonemapReinhardImpl CV_FINAL : public TonemapReinhard
{
public:
......
......@@ -105,12 +105,6 @@ TEST(Photo_Tonemap, regression)
result.convertTo(result, CV_8UC3, 255);
checkEqual(result, expected, 3, "Drago");
Ptr<TonemapDurand> durand = createTonemapDurand(gamma);
durand->process(img, result);
loadImage(test_path + "durand.png", expected);
result.convertTo(result, CV_8UC3, 255);
checkEqual(result, expected, 3, "Durand");
Ptr<TonemapReinhard> reinhard = createTonemapReinhard(gamma);
reinhard->process(img, result);
loadImage(test_path + "reinhard.png", expected);
......
......@@ -35,7 +35,7 @@ int main(int argc, char**argv)
//! [Tonemap HDR image]
Mat ldr;
Ptr<TonemapDurand> tonemap = createTonemapDurand(2.2f);
Ptr<Tonemap> tonemap = createTonemap(2.2f);
tonemap->process(hdr, ldr);
//! [Tonemap HDR image]
......
......@@ -13,7 +13,7 @@ import org.opencv.photo.CalibrateDebevec;
import org.opencv.photo.MergeDebevec;
import org.opencv.photo.MergeMertens;
import org.opencv.photo.Photo;
import org.opencv.photo.TonemapDurand;
import org.opencv.photo.Tonemap;
class HDRImaging {
public void loadExposureSeq(String path, List<Mat> images, List<Float> times) {
......@@ -71,7 +71,7 @@ class HDRImaging {
//! [Tonemap HDR image]
Mat ldr = new Mat();
TonemapDurand tonemap = Photo.createTonemapDurand(2.2f, 4.0f, 1.0f, 2.0f, 2.0f);
Tonemap tonemap = Photo.createTonemap(2.2f);
tonemap.process(hdr, ldr);
//! [Tonemap HDR image]
......
......@@ -40,7 +40,7 @@ hdr = merge_debevec.process(images, times, response)
## [Make HDR image]
## [Tonemap HDR image]
tonemap = cv.createTonemapDurand(2.2)
tonemap = cv.createTonemap(2.2)
ldr = tonemap.process(hdr)
## [Tonemap HDR image]
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册