Specific Area Processing


Certain processing functions allow the user to specify areas within the image. Modifications will then take place inside or outside the specified areas.

Polygons are used to specify these areas. Facilities allow the user to create and modify the polygons. Points on the polygon can be inserted, deleted and moved - and, because they are part of the submitted data, even over different sessions. Aided by zooming, specifying areas is quick and easy.

The Mono Background function.

This function enables the user to blank out the background of an image with a specified color. If requested this color will be made unique. This enables the user to create images with transparent backgrounds.

For this function polygons can be specified to have straight edges, spray edges or fading edges.

To illustrate possibilities using this function we down loaded an image from and with the courtesy of Using WhimPro and entering the polygon only once (which took less than 10 minutes) we did the following:-

Original Image After Cropping
This is the original image after cropping and reducing the size to that which was suitable for our purposes. (43K .JPG)
Transparent GIF Image
GIF image with transparent background. (39K in size).
Image With Mono Background
Image with selected background color. Make the background color the same as your web page's background color and it will appear to have a transparent background. Less flexible but 1/3 the size of a .GIF file. (.JPG 12K in size)
Image with white background color. Suitable for printing. (.JPG)
2 Mono Backgrounds Defined. Image with Halo
By defining a second polygon (2nd Mono Background) this effect can be created.

Notes on the above.

  • All the modifications were done using WhimPro.
  • All modifications were done reading the source file only once and no intermediate files were saved. Only files that were to be used were saved.
  • Experience has shown that the spray and faded edges look more appealing when the polygon is specified to be a few pixels outside the image.