75 results about "Halo effect" patented technology

The invention provides a single image haze removing method based on a mean-mean square error dark channel under a superpixel framework. The method comprises the following steps that the minimum value matrix I<dark> of each color channel of an image I is calculated according to the formula (6), hereafter referred to as the grayscale matrix I<dark>; appropriate parameters T and k are obtained according to the step 1, and the haze removing rate omega is calculated according to the formula (5); the atmospheric light value A is estimated; the matrix img=I / A is calculated, and superpixel segmentation is performed on the matrix img so that multiple omega of which the imaging field depth d(x) of the scene and the scattering coefficient beta of the atmospheric medium are constant are obtained; the dark channel is calculated for each omega according to the formula (4) so as to obtain J<dark>, and the obtained J<dark> of all the omega is spliced together so as to obtain the dark channel J<dark> of the whole image; the coarse transmittance t is calculated through t=1-omega*J<dark>; fine treatment is performed on the coarse transmittance t so as to obtain the fined transmittance t*; and the final recovered image J is obtained by the formula J=(I-A) / t*+A. According to the method, the haze concentration and the field depth are maintained to be unchanged in the local area represented by the superpixels so that the halo effect of the abrupt change part of the field depth can be overcome, and the problem of color cast of the infinite distance part of the field depth can be effectively alleviated.

The present invention is an automobile instrument panel lighting structure providing a gentle illuminant effect on the display card through a halo effect and illuminating the hand without having an external light-source, thereby facilitating a driver's reading when driving at the dark environment.

Contact lenses incorporate high plus or add power profiles that at least one of slow, retard or preventing myopia progression and minimize halo effect. The lens includes a center zone with a negative power for myopic vision correction; and at least one treatment zone surrounding the center zone, the at least one treatment zone having a power profile that increases from an outer margin of the center zone to a positive power within the at least one treatment zone of greater than +5.00 D.

The invention provides a low-illumination image enhancement method based on improved Retinex and logarithmic image processing. The low-illumination image enhancement method comprises the following steps: calculating a bright channel value of a sample image, and taking the value as an illumination component of the sample image; performing self-adaptive local adjustment on the illumination componentby utilizing background intensity under an existing logarithmic image processing model; in combination with a Sobel edge detection method, carrying out filtering refinement on the locally adjusted illumination component; and obtaining an enhanced image based on a Retinex theory according to the refined illumination component. The invention provides a low-illumination image enhancement method based on improved Retinex and logarithmic image processing, being characterized in that the Retinex theory is combined under an existing logarithmic image processing model, so as to enhance a sample imageand effectively solve the problems that a Retinex algorithm may have a halo effect and is too enhanced, and the low-illumination image enhancement method can adapt to more diverse illumination environments.

The invention discloses a method for designing a bandhnu pattern by dedicated fractal software UltraFractal on the basis of a fractal principle. The method comprises the following four steps: (1) in the UltraFractal, according to bandhnu pattern geometry, selecting a fractal complex iterated function, and setting the parameters of the complex iterated function to draw a fractal graph; (2) on the basis of the drawn fractal graph, selecting a mapping function again according to the design requirements of the bandhnu pattern to change the geometry appearance of the graph; (3) according to the color requirements of the bandhnu pattern, selecting and designing an internal color function and an external color function; and (4) according to the color change characteristics of the bandhnu pattern, regulating an UltraFractal color gradient editor to simulate a color halo effect of the bandhnu pattern. The design of the bandhnu pattern is realized through the four main steps.

The invention discloses an information generation method and device, and relates to the technical field of computers. One specific embodiment of the method comprises the following steps of determiningthe daily average sales volume and the daily average flow of a target commodity according to sales volume data and flow data to determine the sales degree of popularity of the target commodity, and determining the halo radiance of the target commodity according to the order quantity and the sales volume of the target commodity; determining the price sensitivity of the target commodity by using apreset fitting demand function according to the transaction price and the reference transaction price of the target commodity and the inventory quantity and the sales trend of the target commodity; and generating the value information of the target commodity according to the sales degree of popularity, the halo radiance and the price sensitivity. According to the embodiment, the influence factorsof more commodity values can be fused, the flow and the sales degree of popularity are integrated, and the halo effect and the price sensitivity of the commodity are also fused.

An image interpolator is presented that utilizes a block-based motion estimator to provide block-based motion vectors and a motion vector select coupled to the block-based motion estimator to provide pixel based motion vectors. A first image interpolator provides a first interpolated image from the selected motion vectors. A second image interpolator corrects the selected motion vectors, including a correction for halo reduction. Post processing can be utilized to further reduce the halo effect.