Function:FocusStack

Stacks multiple images into a single, all focused image. The input images need to be aligned and in order. The function also returns a depth_info image that contains the information against each pixel where it was picked from the stack.

Function

CUVI_EXPORTS CuviStatus focusStack(CuviImage* images, const int numImages, CuviImage& stack, CuviImage& depth_info, const CuviFilter denoiseFilter, const CuviStream& stream);

Parameters

Name Type Description images const CuviImage* Input images array numImages const int Number of images stack CuviImage& Resultant image depth_info CuviImage& Slice/Depth information against stacked 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

Code 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, slice_info; CuviFilter denoiseFilter = CuviSpecialFilters::gaussian(CuviSize(11, 11), 15.0f); cuvi::computerVision::focusStack(ImgArr.data(), numImages, focusImage, slice_info, denoiseFilter); printf("\nSaving to disk.."); cuvi::io::saveImage(focusImage, result);