SPOT 4.1 Basic and Advanced Software Manual for SPOT Insight ...

Ch. 5 – Preparing to Take a PictureChip Imaging AreaSPOT allows you to use any rectangular portion of the CCD chip for image capture. Using a portion of thechip is helpful in cases where you want to:• Keep file sizes small.• Shorten download times.• Avoid areas of the image with optical problems (e.g., vignette areas).There are three image area options:• Full Chip – Capture the entire area of the CCD chip.• Center – Capture a rectangular part of the CCD chip’s area that has the same height - to - width ratioas the full chip, and is centered on the center of the full chip. The percentage that you enter is thepercentage of full chip width that the new area’s width will be.To capture a centered proportion of an image, follow these steps:a) On the Image Setup window, check the Center option.b) Enter the percentage of the image that you want to capture. The minimum percentage is 10 andthe maximum is 100.c) Click on OK to save the image setup.• Region –Capture a specific part of the CCD chip.If you have pre-determined the exact pixel values of the area that you want capture, follow thesesteps:a) On the Image Setup window, check Region.b) Enter the pixel values for the Left and Right columns and the Top and Bottom rows that form theboundaries of the region that you want to define.c) Click on OK. The camera captures the region that you selected.If you do not know the exact pixel values of the area that you want to capture, do the following:a) Click on the Full Chip option.b) From the Camera menu, select the Get Image (exposure from setup) option. The image captureappears on the screen.104 User Guide to the SPOT Insight Camera