---
name: "pfsoctavergb"
section: "1"
platform: "linux"
package: "pfstools"
version: "2.2.0-9"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/pfsoctavergb"
---

# pfsoctavergb(1)

Process red, green and blue channels in pfs stream using Octave

## NAME

pfsoctavergb - Process red, green and blue channels in pfs stream using Octave

## SYNOPSIS

**pfsoctavergb \<octave\_program\>**

## DESCRIPTION

Use this command to execute a GNU Octave program on red, green and blue channels of each frame in the pfs stream. *octave\_program* must be given in quotation marks ("") and must not produce any output (it can output to stderr, not to stdout). Red, green and blue color channels are available in *octave\_program* as **R**, **G** and **B** matrices.

Note: This command requires GNU Octave.

## EXAMPLES

- pfsinrgbe frames\_%04d.hdr \| pfsoctavergb "R = R.^2; G = G.^2; B = B.^2;" \| pfsview

  Expand the dynamic range of a sequence of frames and show the result with pfsview.

## BUGS

Please report bugs and comments to Rafal Mantiuk \<mantiuk@mpi-sb.mpg.de\>.