The fuzzy white balance chromatic aberration compensation of color images can smooth and beautify the image, realize the optimization of multi-light background image, and improve the image quality of imaging. However, under the background of multiple concentrating images, affected by the light of various colors, the image appears white balance deviation and imbalance, resulting in color cast. In the field of image processing, it is often faced with some images with complex lighting background for imaging beautification processing, so as to improve the beauty of the image and the ability to recognize the details of such images. The simulation results show that the method can effectively balance the color difference of the image, improve the aesthetic feeling of the image, and improve the performance of the detail features of the image. By introducing the objective factor, the matching cost function is improved to balance the restoration process, and the unnatural problem caused by the repeated appearance of some image details in the restoration results is solved. By using the known pixel information of the image block to be repaired, the statistical properties of the image block to be repaired are predicted, and the matching cost of the image block to be matched that meets the restriction conditions is calculated. The white balance characteristics of the image were analyzed and extracted based on the wavelet packet decomposition method, and the adaptive balance design was carried out to realize the white balance and color difference compensation of the art design chromatic aberration image. The original image was denoised and filtered. A white balance color compensation algorithm for fuzzy chromatic aberration based on wavelet packet decomposition is proposed. The traditional method uses the contour feature fusion adaptive matching method to compensate the white balance under the complex illumination background, which leads to the good color difference compensation effect when the image pixel is low. If the film contains a cast, filters can be used during photo processing to correct it.In the case of complex illumination background, the image has fuzziness and chromatic aberration, which can improve the imaging effect of the image by white balance chromatic aberration compensation. If the film itself does not contain any cast, it can be reused to create another set of photographs in proper chemical conditions. In the case of film, if photographs all contain the same cast, it is usually indicative of improper chemical development. If a filter is unavailable, flash is an alternative solution which usually provides enough neutral white light to counter the cast. Clouded sky, for example, requires a paler amber than clear blue sky.
Colour temperature meters can read the temperature of the existing lighting conditions and guide the selection of the filter. A photographer chooses which filter to use based on the quality of the ambient light. Kodak's amber filters, for example, vary from palest yellow ("81C") to deepest amber ("85B"). Blue filters reduce the orange colour caused by incandescent light.Ī variety of coloured filters in varying degrees of intensity are available. Amber filters are used to reduce the blueish tint caused by daylight. For film, blue filters and amber filters are used to counter casts. Otherwise, photo editing programs, such as Photoshop, often have built in colour correction facilities. Most digital cameras try to automatically detect and compensate colour cast and usually have a selection of manually set white balance settings to choose from.
The same photo with the colour cast corrected These may be correctable on a scanned version of the photograph with image editing techniques. Improper timing or imbalanced chemical mixtures can cause unwanted casts.Ĭolour casts can also occur in old photographs due to fading of dyes, particularly under the action of ultraviolet light. In film, colour casts can also be caused by problems in photo development. The human eye generally does not notice the unnatural colour, because our eyes and brains adjust and compensate for different types of light in ways that cameras cannot. Illuminating a subject with light sources of different colour temperatures will usually cause colour cast problems in the shadows. Ĭertain types of light can cause film and digital cameras to render a colour cast. JSTOR ( July 2020) ( Learn how and when to remove this template message)Ī colour cast is a tint of a particular colour, usually unwanted, that evenly affects a photographic image in whole or in part.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
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