Function:FocusStack

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Stacks multiple images into a single image. Images need to be aligned.

Function

CuviStatus focusStack(const CuviImage* ImgArr,
                  const int numImages
                  CuviImage& sharpImage,
                  CuviFilter denoiseFilter
                  const CuviStream& stream = CuviStream());

Parameters

Name Type Description
ImgArr const CuviImage* Input images array
numImages const int Number of images
sharpImage CuviImage& Resultant image
denoiseFilter CuviFilter Filter to remove noise
stream const CuviStream& GPU stream ID for execution

Image Type Support

Input Output
8uC3 x N 8uC3
16uC3 x N 16uC3

Samples

Input image with foreground focused
Input image with background focused
Focus-Stacked Image

Example

std::string path = "D:/dataset/fs/imageFolder/";
std::string result = "D:/dataset/fs/focused.png";
 
 
for (const auto& entry : fs::directory_iterator(path))
	{
		if (entry.path().has_extension() && isSupportedExtension(entry.path().extension().string()))
			vec.push_back(entry.path().string());
	}
 
int numImages = vec.size();
vector<CuviImage> ImgArr(numImages);
//Sort filesnames to read in order. THIS IS VERY IMPORTANT FOR FOCUS STACKING
sort(vec.begin(), vec.end(), lessFirst);
 
for (int i = 0; i < numImages; i++)
	{
		ImgArr[i].create(vec[i], CUVI_LOAD_IMAGE_COLOR_KEEP_DEPTH);
		cout << vec[i]<< std::endl;
	}
 
 
CuviImage focusImage;
CuviFilter denoiseFilter = CuviSpecialFilters::gaussian(CuviSize(11, 11), 15.0f);
cuvi::computerVision::focusStack(ImgArr.data(), numImages, focusImage, denoiseFilter);
 
printf("\nSaving to disk..");
cuvi::io::saveImage(focusImage, result);