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Original question:

EVE compiler problem.

TDA2HF: TDA EVE Kernel Query

Swapnil Nagare
Intellectual 340 points
Part Number: TDA2HF

This is regarding a query related to EVE kernels.

We are working on a module for lens distortion correction which contains mapping of input pixels to output pixels based on LUT (Look Up Table)

As per our understanding there is remap application already present in TI EVE library.

 Its difficult to figure out the application as it is implemented using BAM framework.

Can you provide us with some basic points on how we can implements this ?

 Also one doubt we have is as the memory access are not contiguous how can this be implemented on EVE as the internal memory is limited.

 

Please provide your feedback.

  • 0
    TI__Expert 6335 points

    Please refer to appendix 'Appendix B: Remap Convert Table' of the EVE applet user's guide in TI EVE library. This will teach you how to use the applet for lens distortion correction. 

  • 0 in reply to Victor Cheng
    Intellectual 340 points

    Hello Victor,

    Thanks for the information.

    Note that Input Format we use is BGR565 and not YUV420SP.

    So its difficult to locate the changes required for BGR565 in ConvertedMap utility as well the remapApplet.

    Could you please help me in understanding the code so that i can modify it as per our requirements.

    Regards,

    Swapnil

  • 0 in reply to Swapnil Nagare
    Intellectual 340 points

    Also Victor,

    I tried to run the ConvertMap Utility based on Our Mapping Table.

    Img Resolution we working on are Input :1280x720 Output :1280x720

    So i set the config params as Output Block width =128 Output Block = 8.

    But i do not understand how the TLU indexes are generated and how they are used for mapping from Input to Output image transformation.

    Regards,

    Swapnil 

     

  • 0 in reply to Swapnil Nagare
    TI__Expert 6335 points

    Hi Swapnil,

    You don't need to understand how the indexes are generated in order to use the function. Please try to use the functionality for 16-bits integers monochrom image. Once you it works, I can give you some pointers on how to modify for rgb565 images.

    regards,

    Victor