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extract_images dropping frames

asked 2012-02-20 12:41:11 -0600

Eddit gravatar image

Dear All

I have noticed that when I used the extract_images in image_view pkg to extract images from a bag file, it drops frames.

Even if I set the "sec_per_frame" close to zero like 0.0000000000001 or modify the code that do not consider delay in line : if(delay >= sec_per_frame_)

still the number of frames which is extracted is less than the actual recorded frames ?

I noticed this by extracting the header information directly from a bag file and find the number of frames in bag file is greater than number of frames from extract_images.

I appreciate your help.

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This is worth reporting as a bug (if you haven't already):

StFS gravatar image StFS  ( 2012-06-13 16:53:16 -0600 )edit

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answered 2012-02-20 17:06:05 -0600

Eddit gravatar image

just to update. I ended up writing my own code based on the current extract_images. I remove the delay part and I saved all the images to the disk. The problem is with the way the delay is set and if the frame rate is too high it keeps dropping frames!

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Asked: 2012-02-20 12:41:11 -0600

Seen: 814 times

Last updated: Feb 20 '12