---
name: "cpclean"
section: "1"
platform: "linux"
package: "hugin"
version: "2025.0.1-5"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/cpclean"
---

# cpclean(1)

Remove wrong control points by statistical methods

## NAME

cpclean - Remove wrong control points by statistical methods

## SYNOPSIS

**cpclean** \[options\] *input.pto*

## DESCRIPTION

**cpclean** uses statistical methods to remove wrong control points.

Step 1 optimises all images pairs, calculates for each pair mean  and standard deviation and removes all control points  with error bigger than mean+n\*sigma.

Step 2 optimises the whole panorama, calculates mean and standard deviation for all control points and removes all control points with error bigger than mean+n\*sigma.

## OPTIONS

- **--output\|-o** output.pto

  Output Hugin PTO file. Default: '\<filename\>\_clean.pto'.

- **--max-distance\|-n** num

  distance factor for checking (default: 2) (cps with an error \> mean + this factor\*sigma will be removed)

- **--pairwise-checking\|-p**

  do only image pair cp checking (skip step 2)

- **--whole-pano-checking\|-w**

  do only whole panorama checking (skip step 1)

- **--dont-optimize\|-s**

  skip optimisation step when checking the whole panorama

- **--check-line-cp\|-l**

  also include line control points for calculation and filtering in step 2

- **--verbose\|-v**

  verbose output during optimisation

- **--help\|-h**

  shows help

## AUTHORS

Thomas Modes