This web page shows the photo - Lion Fish, that we used in our research work below:

• Yun-Fu Liu and Jing-Ming Guo, "Dot-diffused halftoning with improved homogeneity," IEEE Trans. Image Processing, vol. 24, no. 11, pp. 4581-4591, Nov. 2015.

This photo is of size 1024*683 and it was captured by Celeste RC in 2007. Also, it was originally released in a color form but we converted it into the grayscale form for our research purpose.

In the follows, two versions of the Lion Fish are downloadable by a simple click.