---
name: "calibrate_lens"
section: "1"
platform: "linux"
package: "hugin-tools"
version: "2010.0.0+dfsg-3+b1"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/calibrate_lens"
---

# calibrate\_lens(1)

Lens calibration from straight lines

## NAME

calibrate\_lens - Lens calibration from straight lines

## SYNOPSIS

**calibrate\_lens** \[options\] *\<image1*\> *\<image2*\> *...*

## DESCRIPTION

## OPTIONS

- **-p** \<filename\>

  Input Hugin PTO file.

- **-j** \<filename\>

  Input file containing line data.

- **-d** \<int\>

  Maximum dimension for re-sized image prior to processing. Default 1600

- **-t** \<float\>

  Edge detector threshold. Default 4

- **-m** \<float\>

  Minimum line length as a fraction of longest dimension. Default 0.3

- **-y** \<float\>

  Corner threshold. Default 150

- **-f** \<float\>

  Focal length (mm). Read from EXIF data.

- **-c** \<float\>

  Crop factor. Read/calculated from EXIF data.

- **-s** \<float\>

  Shortest dimension of sensor (mm), used to calculate crop factor.

- **-l** \<int\>

  Lens model:

  - 1 = Rectilinear (default)

    - 2 = Equal-area fisheye

    - 3 = Equal-angle fisheye

    - 4 = Stereographic fisheye

    - 5 = Orthographic fisheye

    - 6 = Generic fisheye

    - 7 = Universal

    - **-z** \<0\|1\>

  Optimise image centre. Default 0

- **-v** \<0\|1\>

  Verbose. Default 0

- **-h**

  Print usage.

## AUTHORS

Tim Nugent