OV5647 having noise in the image with higher resolution (AEGHB-1215)

[nbenhur]

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Issue or Suggestion Description

I interfaced ov5647 sensor manufactured by Arducam and raspberrypi with esp32-p4. With resolution 800x640 the image is good. As the resolution increased like 1280x960 or 1920x1080 the image is having noise which looks like small grains. I tried to tune the camera sensor by changing values of ov5647 json file but there is no changes in the noise levels of the image.
Can you please help to remove the noise in the image.
Can you please tell with which manufactured ov5647 camera have you developed and tested ? So that i will also use the same one.
If i use same camera with reapberrypi zero board then the images are coming good. No noise found in the images.
Attaching the images taken using esp32-p4 and rpi-zero.

[WangYuxin-esp]

When using smaller resolutions(800x640), the sensor operates in binning mode, which significantly improves the signal-to-noise ratio. However, as the output size increases, the sensor can no longer use binning, ultimately resulting in higher image noise.
Currently, there's no effective way to enhance noise reduction capabilities. Perhaps you could try using the OV2710 or other sensors.