What does dxo mean?

The website launched by DxO, a well-known domestic image processing software.

Mainly for the evaluation of digital cameras. The quality and effect of camera shooting are more emotional, so this organization provides a more intuitive quantitative standard for everyone, scoring all aspects of the camera like an exam, and finally we can intuitively see the relative height through the score. DxO has designed a set of measurement standards for camera image quality, which measure the camera image quality from three aspects: color depth, dynamic range and low-light ISO, and reflect the original image quality performance of the photosensitive elements used in the camera according to the schedule application requirements such as landscape, scaffolding portrait shooting and news sports photography.