Quick question about image.

[jav0506]

I was wondering how much memory is needed to store a 1024 x 768 image(noninterlaced displayed at 30 fps) in 256-color? And also how much video memory needed to store the same image in true color? Thanks.

[golanshahar]

I was wondering how much memory is needed to store a 1024 x 768 image(noninterlaced displayed at 30 fps) in 256-color? And also how much video memory needed to store the same image in true color? Thanks.

single 1024x768 frame in 256 color is ~768KB.

about the true color:
16bit it will be 1024x768x2 = ~1596KB
24bit it will be 1024x768x3 = ~2304KB
32bit it will be 1024x768x4 = ~3072KB

hope it helps

Cheers

[7mav123]

Thanks very much:) And also, whats the transfer rate( in bytes per second ) thats needed to move the pixels from memory to screen for a true color image?

[Marc G]

It depends on the number of frames per second that you want to achieve.
As golanshahar said a 32 bit 1024x768 image is around 3072KB. So if you want 1 frame per second that's 3072 KB per second.