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TDA4VM: How mosaic two cameras with different resolutions

QW Wang

Prodigy 155 points

Part Number: TDA4VM

dear TI expert

I used demo with app_multi_cam, I would like to ask if there is a way to mosaic two cameras with different resolutions?

I get an error when I try to add an input to MOSAIC

over 2 years ago

0 Nikhil Dasan over 2 years ago

TI__Guru* 85126 points

Hi,

Yes.
As you can see that the mosaicObj.input_arr[ ] is an array of object arrays.

Hence mosaicObj.input_arr[0] could be the object_array of one camera

and mosaicObj.input_arr[1] could be the object_array of second camera with different resolution.

You must configure the window of mosaic node accordingly by giving the startX, startY, width, height and input_select for each camera input.

Please refer set_img_mosaic_params() API to see the configuration of windows.

Regards,

Nikhil

0 QW Wang over 2 years ago in reply to Nikhil Dasan

Prodigy 155 points

Thanks for your reply

set_img_mosaic_params()，I have made corresponding modifications to this API，But I encountered the following error

0 Nikhil Dasan over 2 years ago in reply to QW Wang

TI__Guru* 85126 points

Hi,

You could refer to the multi-cam application in the SDK 8.6 where both the inputs of mosaic are being used by separate nodes.

However, here the resolution from both the nodes are same, but the same could be done for different resolutions.

Could you send me a flowchart / drawing of the graph that you have constructed?

Regards,

Nikhil

0 QW Wang over 2 years ago in reply to Nikhil Dasan

Prodigy 155 points

dear TI expert

I'm still using a single Graph，as follows

Thanks

+1 Brijesh Jadav over 2 years ago in reply to QW Wang

TI__Guru**** 477425 points

Hi,

Are both of these capture nodes running at the same fps? Otherwise i would recommend to use separate graph for them.

Regards,

Brijesh

0 QW Wang over 2 years ago in reply to Brijesh Jadav

Prodigy 155 points

yes，at the same fps，all at 30 fps

0 QW Wang over 2 years ago in reply to Brijesh Jadav

Prodigy 155 points

Thanks for your reply， thanks Brijesh Jadav and Nikhil two TI experts，this problem has been solved，I reference to TDA4VM: TDA4 create 8 capture node - Processors forum - Processors - TI E2E support forums

+1 QW Wang over 2 years ago in reply to Nikhil Dasan

Prodigy 155 points

Thanks for your reply， thanks Brijesh Jadav and Nikhil two TI experts，this problem has been solved，I reference to TDA4VM: TDA4 create 8 capture node - Processors forum - Processors - TI E2E support forums