Next: 5.8.2 Mosaic
Up: 5.8 Tasks
Previous: 5.8 Tasks
Contents
5.8.1 Capture
This menu groups operations which are useful in capturing images, or for the
inital processing you might want to do to an image captured from another
program.
- Capture Video Frame
- This menu item will currently only work on Linux machines with a
compatible video4linux capture card. See §3.2.1
for notes on how it works.
- Smooth
- Use this to remove texture from images. It's handy in conjunction with
Flatfield.
- Flatfield
- Use this to correct homogeneity. Select an image of a piece of white
(or mid-grey) card, then select the image to correct, then click
Flatfield. Use Smooth to renmove texture from the white card
if necessary.
You can select a single white and a group of images to correct a large
set in one step
- White Balance
- Use this to move the white point to make an area of the image you know
to be white, white.
Mark a region on an image, enclosing a patch you know to be white.
Select the region and the image and click on White Balance.
- Find Colour Calibration
- Use this to colour calibrate an image. Drag a region enclosing an
image of a Macbeth Color Checker Chart and click Find Colour
Calibration.
- Apply Colour Calibration
- Use this to apply the transform calculated by the previous item to
another image. Select the calibration object, select the RGB image
you want calibrated, and click Apply Colour Calibration.
Next: 5.8.2 Mosaic
Up: 5.8 Tasks
Previous: 5.8 Tasks
Contents
John Cupitt
2004-12-20