I have some code that imports an image and converts it to an excel spreadsheet pixel by pixel. However, I've only been able to write the RGB into the cell and want to colour the cell instead. I'm using html…
I'm trying to create a textbox where if you submit the correct answer, the textbox's background turns green, and red for the incorrect answer. However, nothing seems to happen for both options. document.querySelector('form').addEventListener('submit', function(event) { //Stuff let input = document.querySelector('input[name="q"]');…
I'm currently working on connecting my Python backend with my Flutter frontend. My backend hosts a pose estimation model that requires a numpy array as input, representing an image. As a result, I'm aiming to convert the CameraImage data I…
We have .NET Core application which is hosted under Linux based Docker container. System.Drawing library wasn't working here so we needed to installed libpng with command apt-get install -y --no-install-recommends libgdiplus libc6-dev. It sorted out image problem but we can…
I'm trying to convert sRGB values (in Photoshop) to L*ab values (also for use in Photoshop) I'm in the ballpark, but not getting the same results as EasyRGB which is where I got the conversion formulas from. I expect there's…
I wrote a script, that writes average color of image in a file. But, it returns a bit wrong values. # coding=utf-8 from __future__ import print_function import cv2, sys, os import numpy as np palette = [] if len(sys.argv) <…
I am trying to understand how to properly work with the RGB values found in PNM formats in order to inevitably convert them to Grayscale. Researching the subject, it appears that if the RGB values are nonlinear, then I would…
I'm trying to generate a rainbow with 15 different colors with (runnable code here): size(360,100); colorMode(HSB, 360, 100, 100); // Hue in degrees in [0, 360], // saturation/brightness in [0, 100] // like in Photoshop noStroke(); for (int i =…
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?
Mapbox provides Global elevation data with height data encoded in PNG image. Height is decoded by height = -10000 + ((R * 256 * 256 + G * 256 + B) * 0.1). Details are in https://www.mapbox.com/blog/terrain-rgb/. I want to…