ben221199/FILE_FORMAT.md

Created May 3, 2026 12:40

Select an option

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/ben221199/2cd32af3fd4a7c39ea9bfc8a2c4e1da3.js"></script>
Save ben221199/2cd32af3fd4a7c39ea9bfc8a2c4e1da3 to your computer and use it in GitHub Desktop.

Reflectance Transformation Imaging

Raw

File format

Extension: rti (for both PTM and HSH)

Name: Polynomial Texture Mapping (Earlier: Plenoptic Texture Map)

Coefficients: 6

Extension: ptm

Section	Description
Version	One of `PTM_1.0`, `PTM_1.1` or `PTM_1.2`
Format	In the form `PTM_FORMAT_***`
Size	` (
Scale	6 space-seperated floats to scale the coefficients.
Bias	6 space-seperated floats to bias the coefficients.

Name: Hemispherical Harmonics

Extension: hsh