Pixeleaters

I loved your drawing object trails video, it gave me an idea that might be something for your coding challenge series?

The idea is to add an image from a webcam to the canvas, and as the (ellipse) particles scramble across randomly they "sample" the pixels underneath. The brightest pixels in the selection are adjusted on step brighter (or more transparent), and the darkest pixels are adjusted on step darker. In short changing the image gradually, "cleaning it up" like bacteria seen in a microscope would eat sugar on a substrate. Not sure if that explanation made sense :)

https://www.youtube.com/watch?v=vqE8DMfOajk

Anyways, keep up your fantastic work, you have a unique way of explaining that and enthusing that I absolutely love.

该建议没有指出任何仓库文件、测试或入口点，因此应先检查项目结构，并决定应将 webcam 输入、canvas 渲染和粒子行为放在哪里。要视为完成，需要确定一致的实现范围，并提供一个能演示所述图像清理效果的可运行示例。

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