We turn our attention to how to code an image in Excel. We will assume that our image is written in greyscale. The intensity of the grey can be measured between 0 and 255, where 0 is black and 255 is white. See Colors for more information about RGB coding and Greyscale for information about greyscale coding.
Topics
We use the concepts and techniques in this part of the website when we describe how to construct a neural network to recognize handwritten digits (0, 1, 2, …, 9).
References
McCaffrey, J. (2020) Displaying a grayscale image using Excel cells
https://jamesmccaffrey.wordpress.com/2020/05/11/displaying-a-grayscale-image-using-excel-cells/
Dynamsoft (2019) Image processing 101 chapter 1.3: color space conversion
https://www.dynamsoft.com/blog/insights/image-processing/image-processing-101-color-space-conversion/
Wikipedia (2024) Grayscale
https://en.wikipedia.org/wiki/Grayscale
Digital Inspiration (2024) Pixel Art
https://appsource.microsoft.com/en-us/product/office/wa200006113?tab=overview