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TDA3MV: How to change issCapture output frame resolution

Gary Kuo55
Expert 1130 points
Part Number: TDA3MV

Hi,

I would like to change the issCapture output resolution from 1280*800 to another one, how can I do?

I'm using AR0140 to capture images.

Thank you,
Gary

  • 0
    TI__Guru**** 399140 points

    Hi Gary,

    I think AR0140 is configured for the highest supported resolution. Could you please check if AR0140 supports higher resolution?

    Rgds,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Expert 1130 points

    Hi Brijesh,

    If I want to resize to e.g. 640*480, how can I do it?

    Thank you,
    Gary

  • 0 in reply to Gary Kuo55
    TI__Guru**** 399140 points

    Hi Gary,

    You could use ISP to resize to smaller resolution. 

    Or you could crop top-left corner in the capture module.

    Rgds,

    Brijesh

  • 0 in reply to Brijesh Jadav
    TI__Mastermind 24525 points

    Hello Gary,

    Please refer to AR0140 sensor settings in file ar0140_linear_1280x800_setup.h

    The following lines of code can be changed to set sensor output resolution

        {0x3004, 0x0020, 0x00},     /* X_ADDR_START             */ \
        {0x3002, 0x0018, 0x00},     /* Y_ADDR_START             */ \
        {0x3008, 0x051F, 0x00},     /* X_ADDR_END               */ \
        {0x3006, 0x0337, 0x00},     /* Y_ADDR_END               */ \

    Please make sure that sensor resolution is also changed in the functions IssSensor_AR0140_TIDA_Init and IssSensor_AR0140_Init

        info->width             = 1280;
        info->height            = 800;

    Please also make sure that black line position in the struct aewbConfig_ar0140 is also modified accordingly.

        798U,       /* Black Line Vertical Start */

    This must be equal to (sensor output lines - 2). If you set the sensor output to 640x480, Black Line Vertical Start must be 478.

    Regards,

    Mayank