Photoshop like brush with OpenCV
I am trying to add some blur brush stroke with OpenCV If I use cv.add or cv.addweighted, I only got half of the red color (look pink), but I want the red to cover the underlying picture, not blend. If…
mathematical equations for blending two images – Photoshop
I have seen many tutorials that people blend two images that are placed on top of each other very nicely in Photoshop. For example here are two images that are placed on top of each other: Then in Photoshop after…
Whats wrong with this nearest neighbor algorithm for image scaling? – Photoshop
I've been hunkered for days trying to find out what's wrong with my nearest neighbor interpolation when scaling an image half its size. Im using Rust but I don't think it matters as much as the algorithm: /// Interpolate using…
Create transparent image in opencv python – Photoshop
I am trying to make a transparent image and draw on it, and after I will addWeighted over the base image. How can I initialize fully transparent image with width and hight in openCV python? EDIT: I want to make…
Implementing PSD processing in web (like in society6.com) – Photoshop
Is there a Windows server with Photoshop running that process all these templates? It just happens too quickly. How did they achieve that? I've been looking for the answer for quite a long time and didn't find anything worthy.
If we shift the hue by 2*pi/3, what will the R, G, B, histograms change? – Photoshop
If we shift the hue by 2*pi/3, what will the R, G, B, histograms change? How can I test this? I have access to photoshop, so is there a way to test this and find the answer?
Detecting strongest points on text – Photoshop
I need to find text areas on a natural image. I = rgb2gray(imread('image-name.jpg')); points = detectHarrisFeatures(I); imshow(I); hold on; plot(points); Above version of code retrieves all detected strongest points. When I change the line that starts with "plot" like this:…
Replicate Photoshop sRGB to LAB Conversion
The task I want to achieve is to replicate Photoshop RGB to LAB conversion. For simplicity, I will describe what I did to extract only the L Channel. Extracting Photoshop's L Channel Here is RGB Image which includes all RGB…
Create Layered Tif with Java for use in Photoshop
I'm interesting in creating a layered tif with Java in a way that Photoshop will recognize the layers. I was able to create a multi-page tif, but Photoshop does not recognize the pages as layers. The pages are viewable with…
What is wrong with my bilinear interpolation algorithm? – Photoshop
I am using PHP to test out my bilinear algorithm. The code is un-optimized for clarity. Here is what the code below is doing: Plot the original pixels from the 2x2 image to the 10x10 destination image. These will leave…