In an unlikely mash-up, Matt Parker of Think Maths offers a free tool that converts a digital photo of your choice into an Excel spreadsheet. According to the website, "digital photographs are actually just spreadsheets. When you take a photo, your camera measures the amount of red, green, and blue light hitting each pixel, ranks them on a scale of 0 to 255, and then records those values as a spreadsheet." Parker's website is able to extract said values from a digital photo, record the numeric values in worksheet cells, and then use Excel's Conditional Formatting feature to recreate the photograph.
- Visit http://think-maths.co.uk/spreadsheet and choose a photo of your choice, as shown in Figure 1.
- Click the Download Excel button to download your resulting Excel file.