[ros-users] Openni_camera rgb and depth modes
Pinaki Banerjee
pinaki2999 at gmail.com
Wed Nov 23 10:43:31 UTC 2011
Hi,
The openni_camera provides following options in the dynamic configure to
change the resolution of the rgb and depth images :
~image_mode (int, default: 2)
- Image output mode for the color/grayscale image Possible values are:
SXGA_15Hz (1): 1280x1024 at 15Hz, VGA_30Hz (2): 640x480 at 30Hz, VGA_25Hz (3):
640x480 at 25Hz, QVGA_25Hz (4): 320x240 at 25Hz, QVGA_30Hz (5): 320x240 at 30Hz,
QVGA_60Hz (6): 320x240 at 60Hz, QQVGA_25Hz (7): 160x120 at 25Hz, QQVGA_30Hz
(8): 160x120 at 30Hz, QQVGA_60Hz (9): 160x120 at 60Hz
~depth_mode (int, default: 2)
- depth output mode Possible values are: SXGA_15Hz (1): 1280x1024 at 15Hz,
VGA_30Hz (2): 640x480 at 30Hz, VGA_25Hz (3): 640x480 at 25Hz, QVGA_25Hz (4):
320x240 at 25Hz, QVGA_30Hz (5): 320x240 at 30Hz, QVGA_60Hz (6): 320x240 at 60Hz,
QQVGA_25Hz (7): 160x120 at 25Hz, QQVGA_30Hz (8): 160x120 at 30Hz, QQVGA_60Hz
(9): 160x120 at 60Hz
Can somebody please indicate how the sub-sampling is done? How is the lower
resolution(ex. 160x120 at 30Hz) is extracted from the original image form the
sensor?
Thank you,
Pinaki
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