Avoiding Blurry Images Using NI-IMAQdx

Issue Details

If you are using NI's Vision Acquisition Software to capture objects in motion, you need the right configuration of the three attributes of your camera: Exposure time, Aperture, and ISO. Or else, the captured images can be blurry, unclear, or dark.

Solution

In order to fix this issue and avoid having blurry images, you should modify the camera configuration, and in particular, decrease the "Exposure time".
Decreasing the The Exposure time will reduce the period when the shutter is open on the camera, so the motion will not be noticed. Decreasing the "exposure time" too much may prevent light from entering to the camera lens, and the brightness of the photo will be very low and the images will come out unclear.

Additional Information

1. The exposure time

In photography, shutter speed or exposure time is the length of time that the digital sensor inside the camera is exposed to light (that is when the camera's shutter is open) when taking a photograph. The amount of light that reaches the film or image sensor is proportional to the exposure time. 1⁄500 of a second will let half as much light in as 1⁄250.

 

2. The Aperture

Aperture refers to the opening of a lens's diaphragm through which light passes.

 

3. The ISO

In very basic terms, ISO(International Organization for Standardization) is a camera setting that will brighten or darken a photo, in other words, light sensitivity. As you increase your ISO number, your photos will grow progressively brighter. For that reason, ISO can help you capture images in darker environments, or be more flexible about your aperture and shutter speed settings.

 

In LabVIEW, it is possible to programmatically get and set attributes such as brightness, shutter speed, and gain with NI-IMAQdx by following the steps mentioned in this article: Programmatically Get and Set Attributes with NI-IMAQdx - NI