why is there a smiley face when use imagesc

Hi,

I am doing normal image analysis. When use imagesc, a smiley face shows in the corner. Does it happen to anyone?

[Rik]

I would expect that the face is in your image data. If you supply your input files, along with the code you used, we could check.

Answer 1

[Stephen23]

That is not a smiley face, it is a photo of Steve Eddins' eldest son:

https://blogs.mathworks.com/steve/2006/10/17/the-story-behind-the-matlab-default-image/

For some reason you have the default image data mixed up with your own data. Possibly this occured because you somehow added new image data to an already displayed image (e.g. perhaps after using hold on)... what MATLAB version are you using, and how are you calling imagesc ?

[Chao Gong]

Very interesting, thank you!