I need to develop a prototype of a device that does the following:
- Take an HDMI input
- For each frame extract a small region of the screen. It's a small bar indicating some changing value.
- Convert this bar length into an int value, say 0-256. This can be done in linux once the region is extracted
- Pass through the HDMI onto the display
Could you please suggest which processor/development board/capture card or any other device that can accomplish this task. I was looking at DaVinci processors and they look like they are capable of this.