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Image distortion after enable KTNF

Tracy lee
Expert 1505 points

Hi all:

        The image will distortion after enable the noise filter, is there any way that can avoid the distortion when enable KTNF? such as KTNF only worked on (width-32)*(height-32) image, but not add extra 32 pixel?

         Any comments would be appreciate!

  • 0
    TI__Mastermind 19985 points

    Hi Tracy,

    we need more details on the image distortion. What kind of distortion are you talking about? Is this distortion in the YUV data after KTNF or after the encode operation?

    Are you using IPNC Ref Design or have you integrated KTNF on your own in the system?

    Regards,

    Anshuman

  • 0 in reply to Anshuman Saxena
    Expert 1505 points

    Hi Anshuman:

              Thanks for you response so quickly!

    Anshuman Saxena said:

    we need more details on the image distortion. What kind of distortion are you talking about? Is this distortion in the YUV data after KTNF or after the encode operation?

              

                The distortion happened after encode, I'm not sure wheather the distortion happened in YUV data, here attached two picture for you reference:

              

    Anshuman Saxena said:

    Are you using IPNC Ref Design or have you integrated KTNF on your own in the system?

    I test this on IPNC board and found the distortion too.

     

     

  • 0 in reply to Tracy lee
    TI__Mastermind 19985 points

    I am sorry, but i did not understand the distortion in the images. Can you please pin point?

    Also, what are the two images? Is it before encode and after encode?

     

    Regards,

    Anshuman

  • 0 in reply to Anshuman Saxena
    Expert 1505 points

    Hi Anshuman:

         The two images are captureed after encode. you can save the two images to you local PC and view it, you will found the distortion just like:

           

  • 0 in reply to Tracy lee
    TI__Mastermind 19985 points

    Hi Tracy,

    I imagined that the extra field of view that you are seeing is what you meant by distortion and your figure confirms that.

    Noise Filter is implemented in such a way that it needs extra capture from the sensor for its operation. It needs extra pixels on each side and extra lines at top and bottom. This is the reason why you are seeing a different field of view in the case with KTNF and without KTNF. Currently we dont have any implementation without the extra image data for KTNF.

    Regards,

    Anshuman

    PS: Please mark this post as verified, if you think it has answered your question. Thanks.

     

  • 0 in reply to Anshuman Saxena
    Intellectual 440 points

     Hi Tracy, Anshuman:

        I found the DM36X IPNC REF design uses the demo KTNF, when open  the NF funtion,  it will be disabled after 13 mintues later, then the image will have more noise,  how can we fix this problem? my avtive email is stevenyinhai@gmail.com 

    BESTREGARDS

    Steve