---
name: "exrenvmap"
section: "1"
platform: "linux"
package: "openexr"
version: "3.1.13-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/exrenvmap"
---

# exrenvmap(1)

for creating OpenEXR environment maps.

## NAME

exrenvmap - for creating OpenEXR environment maps.

## SYNOPSIS

**exrenvmap** \[options\] infile outfile

## DESCRIPTION

This manual page documents briefly the **exrenvmap** command. This manual page was written for the Debian distribution because the original program does not have a manual page.

**exrenvmap** converts OpenEXR latitude-longitude environment maps into cube-face environment maps or vice versa.

## OPTIONS

- **-o**

  produces a ONE\_LEVEL output file (default)

- **-m**

  produces a MIPMAP\_LEVELS output file

- **-c**

  the output file will be a cube-face environment map (default)

- **-l**

  the output file will be a latitude-longitude environment map

- **-w x**

  sets the width of the output image to x pixels (default is 256).  The height of the output image will be x\*6 pixels for a cube-face map, or x/2 pixels for a latitude-longitude map.

- **-f r n**

  sets the antialiasing filter radius to r (default is 1.0) and the sampling rate to n by n (default is 5 by 5).  Increasing r makes the output image blurrier; decreasing r makes the image sharper but may cause aliasing.  Increasing n improves antialiasing, but generating the output image takes longer.

- **-t x y**

  sets the output file's tile size to x by y pixels (default is 64 by 64)

- **-p t b**

  if the input image is a latitude-longitude map, pad the image at the top and bottom with t\*h and b\*h extra scan lines, where h is the height of the input image.  This is useful for images from 360-degree panoramic scans that cover less than 180 degrees vertically.

- **-d**

  sets level size rounding to ROUND\_DOWN (default)

- **-u**

  sets level size rounding to ROUND\_UP

- **-z x**

  sets the data compression method to x (none/rle/zip/piz/pxr24, default is zip)

- **-v**

  verbose mode

- **-h**

  prints these options

## AUTHOR

This manual page was written by Andrew Lau \<netsnipe@users.sourceforge.net\>, for the Debian GNU/Linux system (but may be used by others).