Blurry Images

Problem

The 2D color image is blurry.

Color image out of focus	Color image in focus

Potential Causes

There are mainly two reasons for an image to be blurred.

• The camera is out of focus

• Image areas are oversaturated

What causes this effect?

The blurry effect refers to a phenomenon wherein light ‘bleeds’ from areas with excess light to areas of lower light. What actually happens is that light (photons) that is supposed to be centered in one pixel is scattered to neighboring pixels and vice versa. This reduces the strength of the signal at a given pixel, while noise is increased due to incoming light from neighboring pixels. This results in a lower Signal-to-Noise ratio (SNR). SNR describes how well Zivid can read back the projected signal for a given pixel.

Potential Solutions

Out of focus

Make sure the camera is in focus by following these steps:

Check the optimal range

Position the camera within its recommended working distance.

Verify the depth of field:

The depth of field depends on the aperture settings. Ensure it’s wide enough to cover your entire scene.

For help, refer to guides like Calculate FOV and Imaging Distance and Depth of Focus.

Oversaturated areas

Too much light can cause certain areas to lose detail. To fix this, look at the 2D image to identify any oversaturated spots.

Reduce exposure time:

Shorten the duration the sensor collects light.

Lower the aperture setting:

This reduces the amount of light entering the camera.

Imagine pixels as buckets. If they overflow due to too much light, the excess spills into nearby pixels, creating a blurry effect. Adjust acquisition settings to prevent this.