Offset tracked object

[Rainnie-oo7]

I undergo interference with several Formats FLV, MP4, AVI, see pictures. Sometimes the ball is beeing tracked, so the tracking isn't very good. I'm not sure whether was using a Full-HD Video or not ...but is this a codec problem? The tracked ball seems to be offset by a fixed offset. Some Video- (or Videoformats Idk) to the Top leftish, some like here in pictures to the Right bottomish. Have someone experienced the same issue, stackoverflow can't tell a solution, for now?

[jhwang7628]

Facing same issue. Have you figured out what is the problem?

[jhwang7628]

Seems like dividing x,y by 2 solves the issue. Not sure why but it seems to work ..

[kalays025]

Could you tell me at which specific position in which script to divide x and y by 2

[frags51]

In the postprocess function in general.py change the default value of scale from 2 to original_image_height/360. If required, add a new argument for scale_x = (original_width/640)

This needs to be done both for training and inference.

Here's the explanation -

• The model processes images resized to 640x360
• The postprocess function returns coordinates in the 640x360 space
• But when writing the video, these coordinates are being used directly on the original resolution frames