Using Color Compatibility for Assessing Image Realism
|There are only 2 real images. Can you identify them? (answer below*)
Automatic image recoloring
Why does placing an object from one photograph into another often
make the colors of that object suddenly look wrong? One possibility
is that humans prefer distributions of colors that are often found
in nature; that is, we find pleasing these color combinations that
we see often. Another possibility is that humans simply prefer
colors to be consistent within an image, regardless of what they
are. In this paper, we explore some of these issues by studying the
color statistics of a large dataset of natural images, and by
looking at differences in color distribution in realistic and
unrealistic images. We apply our findings to two problems: 1)
classifying composite images into realistic vs. non-realistic, and
2) recoloring image regions for realistic compositing.
Download the poster that was presented at ICCV 2007 here: [PDF, 11.8MB].
The semi-automatically generated dataset we used to obtain all the
results in the paper is available for download HERE.
We also provide an example matlab function which loops over all the images in the
database, extract various useful information, and displays it to the
screen. This is meant to provide a starting point to anyone interested
in performing experiments on the dataset.
* Only images 1 and 4 are real
|Examples of realistic composites from our database
|Examples of unrealistic composites from our database
This research is supported by:
- NSF CCF-0541230
- NSF CAREER IIS-0546547