Rgb Multi Colour
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Will it ever be possible to display images in more than the primary color RGB color bands/channels?
This question is for the IT geeks with knowledge of additive and subtractive color theory and remote sensing. I've worked with multi-band Thematic Mapper 4 and 5 4 and 7 band imagery for over 10 years in ERDAS 7.5 and ERDAS Imagine software. I understand that multi-band imagery is based on filters that only let a limited amount of wavelengths be recorded in each band, same as narrow as nanometers wide in AVIRIS images. Why can't some way be devised to allow more than 3 color channels to be displayed simultaneously by digital filtering and/or combination?
I don't have knowledgeabout ERDAS or AVIRIS. But I do have knowledge of images, various color models.
If I understand correctly then you are saying along with RGB which is 3 channel why can't there be addition 4th, 5th .. channels which can combine along with RGB and render on the display.
I think 4th channel is already available in the form of alpha channel. This alpha channel is used to blend the current frame over the already existing frame on the display. Display devices (I have personally used nVidia hardware for this) are already available. If need arises then I think adding more channels should be possible. May be its just that such requirement hasn't become important yet.
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