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When editing or applying a selective adjustment to a digital photo, outlining the area you want to edit (applying a mask) can be a challenge. Typically, you have to use selection tools, magic wands, and even your best drawing skills. These methods are labor-intensive and often imprecise. In the early 2000s, Nils Kokemohr (founder and former CTO of Nik Software) and his team of engineers invented an effective and revolutionary technology designed to apply masks and make selections with incredible precision. Dreamed of by countless photographers, this method was called U Point™ technology. First a part of the Nik Collection, this technology has since received multiple awards and is widely acclaimed. In 2017, DxO purchased the Nik Collection from Google and modernized U Point™ technology so it could support the RAW files used in DxO PhotoLab, the company's advanced photo editing solution. "U Point™"-i.e. "you point"-lets you identify a reference point, called a Control Point or a Control Line, in the most natural way possible by simply clicking on it with your mouse. Next, users can fine-tune the radius of the editing area around the Control Point as well as the direction, which alters the width and angle of the region affected by a Control Line. Based on the selected reference point, the technology uses the U Point™ algorithm to understand the pixel's characteristics in terms of color channel value (red, green, and blue), hue, saturation, and luminance. In addition, U Point™ technology also analyzes the texture of the surrounding area in the photo to distinguish between similar pixels based on their color and texture.

DxO ClearView Plus technology in DxO PhotoLab. Remove haze with a single click. Haze is caused by the dispersion of light by particles in the air. Even on a clear day, the haze created by diffracted light is very visible on objects that are more than 2 miles away. This is called "dry haze." When the haze is created by the diffusion of water particles, we refer to it as "mist" or, if visibility is reduced to less than half a mile, as "fog". A portion of the light reflected by a subject into the lens (in this case, the light reflected by the building and represented by the yellow arrows in Figure A below) is lost because it is absorbed or scattered by particles in the air. In other words, the light is redirected elsewhere, as represented by the arrows pointing in different directions. As a result, the subject appears fainter. Some of the light coming from the light source (in this case, the sun) is redirected towards the camera due to light being reflected by particles in the air, creating even more parasitic light in the photo. This phenomenon makes dark areas appear lighter than they are. In theory, to remove haze, you would need to know the distance between the camera and each subject, the amount of diffracted light, and the properties of the light source. However, it's impossible to get all of this information from a single image! As a result, choices have to be made, starting with the assumption that if a photo does not have haze, it's because it includes local dark areas (and, more specifically, because at least one of the RGB color channels is low). The haze removal process must bring the R, G, and B values back to zero (to compensate for light diffusion) and amplify the signal to compensate for the loss of light from the subject. DxO Clearview Plus uses these principles and can remove haze with a single click.

Correcting camera and lens defects: one of DxO's areas of expertise. Correct lens sharpness, geometric distortion, unwanted vignetting. DxO is the only company to offer such a high-quality feature for improving lens sharpness. Its analytical protocol measures the sharpness of multiple points in the image. Its complex algorithms restore even the finest details and micro-contrasts to the entire image, including along the edges. DxO excels in geometric distortion correction. Using a reference image, DxO's experts calculate the extent of the distortion for each position in the image. The defect is then automatically corrected, even when the image has already been corrected by the camera. To identify chromatic aberrations, DxO's experts analyze the image's red, green, and blue channels separately. DxO's powerful algorithms then take into account the aperture and focal length used to obtain the best finish. As a result, colored outlines are removed without altering the image's details and colors. Thanks to its exclusive lens and camera pairing map protocol, DxO's correction feature compensates for the risk of over-exposure and color alteration and does not create additional noise when brightening dark areas. The result is a perfectly balanced photo. DxO lens modules contain all the necessary information for simultaneously correcting vignetting distortion, chromatic aberrations, and a lack of sharpness. They are designed in the laboratory using a rigorous and extremely precise process that is specific to each lens and camera combination.

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