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.\"     Title: butteraugli
.\"    Author: [see the "Author" section]
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.\"      Date: 03/09/2024
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.\"  Language: English
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.TH "BUTTERAUGLI" "1" "03/09/2024" "\ \&" "\ \&"
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.SH "NAME"
butteraugli \- measuring perceived differences between images
.SH "SYNOPSYS"
.sp
butteraugli \fI{image1\&.(png|jpg|jpeg)} {image2\&.(png|jpg|jpeg)} [heatmap\&.ppm]\fR
.SH "DESCRIPTION"
.sp
Butteraugli is a project that estimates the psychovisual similarity of two images\&. It gives a score for the images that is reliable in the domain of barely noticeable differences\&. Butteraugli not only gives a scalar score, but also computes a spatial map of the level of differences\&.
.sp
One of the main motivations for this project is the statistical differences in location and density of different color receptors, particularly the low density of blue cones in the fovea\&. Another motivation comes from more accurate modeling of ganglion cells, particularly the frequency space inhibition\&.
.SH "AUTHOR"
.sp
This manual page was written by ChangZhuo Chen \fI<\fR\fIczchen@debian\&.org\fR\fI>\fR for the \fBDebian GNU/Linux system\fR (but may be used by others)\&.