I have two UIImages - let's call them base and overhead. Their size is the same. I need a UIImage that is made like this: when overhead's pixel is solid or semi-transparent, use clear pixel. When overhead's pixel is fully…
I am looking for a way to extract images from within another image. For example: Here is a picture taken of a paper. It includes text, an image of a camera, and an image of a qr code. Is there…
I have a pretty complex script to handle image cropping/resizing in our custom CMS, built on native PHP 8. I feel like I need to elaborate on my question first: I'm cropping the images and saving them as .webp files…
Consider the following image: and the following bounding contour( which is a smooth version of the output of a text-detection neural network of the above image ), so this contour is a given. I need to warp both images so…
Most image editing software has gradient map functions. Gradient maps take the brightness of a given pixel and apply a gradient of colors according to brightness. Photoshop and other software have ways to automate this, but they can't do exactly…
I've been going over my code for a few hours now and I'm not sure why this contrast algo isn't working. Following this guide I've used the small algorithm given on the post. However I did mine using HSI color…
I'm currently trying to find a way to count coloured swatches. They are all regular, same size, arranged in a chess board pattern, colours vary. The number of swatches will vary from a few hundred to about 90,000. In this…
I want to apply unsharp mask like Adobe Photoshop, I know this answer, but it's not as sharp as Photoshop. Photoshop has 3 parameters in Smart Sharpen dialog: Amount, Radius, Reduce Noise; I want to implement all of them. This…
I am developing the linebot to receive picture with QR-code. As you can see on below code I have already success to save file in to local folder as 'logo.png' in stream.on('end' , ...) Then I want to use that…
I have a number of PNG image files that I'd like to increase in size. I do not want to rescale the image. I just want to extend the white background further down and to the right. In GIMP terms…