Processing
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 Processing

Image Processing
You can reach this page either by pressing Align & Stack in the Align Frames page or  after pressing the Stack in the Stack Frames page. First you will be presented with a view that is completely the same as the image after stacking.

Picture

Wavelet layers
The processing is done by means of wavelets and they have scales assigned to them. You can either choose Dyadic or Linear. The Dyadic scale is 1,2,4,.... and cannot be changed to any other setting. The must usefull setting is Linear, using the Initial and Step thumbwheels you can make many different scales. The default is Initial=1 and Step=0 (notation 1/0) which leads to scale 1=1, scale 2 = scale 1+ 0 etc. etc. When you set 1/1 the scales become 1,2,3,4,5,6. Setting them to 2,2 leads to 2,4,6,8,10,12.

Wavelet sliders
These sliders control way the information in the different layers is used to assemble the final image. A special set of pages has been made to show the effects of wavelets, you can read more overhere.

Selection processing
When you press the mouse-button over the image and draw (keep the button pressed) a rectangle you can process only part of an image. This is sometimes handy to fast test some settings. You can keep the selected rectangle onscreen by setting Draw selection box. Once you have selected an area, you can also decide to only save the information from that specific area (only BMP !).

Auto-processing
When this is set ON then all changes to the sliders will be reflected directly in the final image.

Gamma/Contrast/Brightness
A basic set of controls to change the appearance of the image.

Flip Vertical/Horizontal
This allows the user to correct the image so that north is up etc.

RESET
Sets all sliders/thumbwheels back to the original position.

Capturé par MemoWeb ŕ partir de http://aberrator.astronomy.net/registax/html/processing.html  le 23/08/02