OMAP 5912 Webcam

阿智
2007-08-13T09:43:13Z

Dear all,
I got some problems in OMAP5912. I use the webcam Orite SC-120 webcam with my OMAP5912. I use V4L library to write a program of capture(RGB Format)to test the webcam ,but I got a low frame rate about 3 frame/s(352x288).
I hope to achieve 15 (f/s) frame rate, so I set the webcam sequence width and height to 176 and 144. But I still got the same frame rate.
I think some problem list ,but I don’t know which one is correct. If anyone can teach me what problem I got.

1. The bandwidth of OMAP5912 usb is not enough.The webcam only can use RGB format to capture.
2. I set the lower width and height to capture for faster frame rate. But I still got the same frame rate. whether the webcam capture the full image size(352x288) to OMAP, and downsample the image size(176x144) after that.
3. I got mistake in my program of capture.

Webcam Feature

Senser 1/7"CMOS 120K Pixels Video Format 24-Bit True Color USB Inetr face Compliant to USB 2.0 and 1.1 Image Resolution 640x480, 352x288, 320x240, 176x144, 160x120 Video Resolution 640x480, 352x288, 320x240, 176x144, 160x120 Frame rate VGA 640x480 @ 30 frame rate per second Adjustable Focus 3 CM to Infinity Automatic White Balance Yes Automatic Exposure Yes Automatic Compensation Yes Store Digital Videos Formats AVI / WMV Store Digital Photo Formats JPEG / BMP

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