David Novickさんのイラストまとめ

Here's the answer. Did you get them right or wrong? Original .png file is at https://t.co/6r2PMbLMJc.

The annotated index to illusions from September is now available at my illusions Dropbox folder, https://t.co/6r2PMbLMJc.

New Plaids 9: The columns of lines that appear yellow and light blue are actually the same color (RGB 222 255 198). Original .png file is at https://t.co/6r2PMbLMJc.

New Plaids 8: The columns of lines that appear green and light blue are actually the same color (RGB 000 255 128). Original .png file is at https://t.co/6r2PMbLMJc.

Stereo Landscape 22: A stereogram created by hand of UTEP's College of Business Administration at sunset. To see in 3D, use the "Magic Eye" technique. The image has 3 elements, and the main building tilts away from the viewer. Original .png file is at https://t.co/6r2PMc3nAK.

Stereo Landscape 2: A stereogram created by hand from a photo I've taken. This is a sculpture at #UTEP at sunset. To see in 3D, use the "Magic Eye" technique. The image has 5 layers. Original .png file is at https://t.co/6r2PMbLMJc.

"Disks" color illusion 2: The backgrounds of the disks appear to be yellow and pink but are all the same color (RGB 255, 219, 139). Zooming out increases the effect. Original png file is at https://t.co/6r2PMc3nAK.

Inspired by @AkiyoshiKitaoka, here's an illusion where the red inset appears to move.

A color-constancy illusion inspired by @AkiyoshiKitaoka: The apparently deepest orange parts of the banners are actually gray (approx. RGB 130,150,150), and the brightest orange parts are actually green (approx. RGB 135,185,150)! Original png file: https://t.co/6r2PMbLMJc .

Here's the stronger-effect Munker illusion for green. Original png at https://t.co/6r2PMbLMJc. 2/3