Here is how you implement a low-pass filter using convolution: double[] signal = (some 1d signal); double[] filter = [0.25 0.25 0.25 0.25]; // box-car filter double[] result = new double[signal.Length + filter.Length + 1]; // Set result to zero: for (int i=0; i < result.Length; i++) result[i] = 0; // Do convolution: for (int … Read more
The conversion from RGB to CMYK is dependent on the physical device/process being used to lay down the CMYK ink. These are represented in software as Color Profiles. ICC and ICM color profiles of physical devices determine the resulting colors. If you are not concerned with true representation on a physical device then use the … Read more
Photoshop blends two images together by performing a blend operation on each pixel in image A against its corresponding pixel in image B. Each pixel is a color consisting of multiple channels. Assuming we are working with RGB pixels, the channels in each pixel would be red, green and blue. To blend two pixels we … Read more
The first font in the image is Museo Slab 500. Here’s how I found that out: Open the image with Paint.NET Layers > Rotate/Zoom Rotate by -19.75° With the Rectangle Select tool, highlight just 1 font Image > Crop To Selection That gave me the following image: I then uploaded that to WhatTheFont, filled in … Read more