57results about How to "Avoid halo" patented technology

An aspect of the present invention provides an image taking device comprising an image pickup device which picks up an image in a field, a luminance measuring device which divides the image into the predetermined number of blocks to measure the luminance level of each block, a reference average luminance level calculating device which calculates an average luminance level in a predetermined reference area in the image, a bright block sampling device which compares the average luminance level in the reference area with the luminance level of each block to sample a bright block high in luminance level, a backlight determining device which determines whether the picked up image is backlit based on the average luminance level of the bright blocks and the average luminance level of the reference area, and an exposure controlling device which calculates an exposure value based on the result of the determination as to the backlight to control exposure.

Flood filling a region with anti-aliasing. In forming a fill region, a candidate pixel can be included in the region based on a color of the pixel and also a color of a neighbor of the point. The inclusion basis may be a color distance between a seed color and the points, and a color distance between the seed color and the point's neighbor. Points in the region may be weighted according to their color distance relative to the seed color, where the color distance can also take into account alpha values. Flood filling may be anti-aliased by assigning alpha values to pixels in gaps between corners of the fill region, where an alpha value may be proportional to a point's contribution to the gap. Dimples in a fill region may be tested for and used to determine which of two flood fill algorithms to use.

An illuminating device for machining tools is disclosed. A machining tool is installed with an illuminating device that uses a single LED prepared using the multi chip single module technique to provide high-power light. This elongates the lifetime of the illuminating device and has the advantages of power-saving and low temperature. The light thus produced does not have UV and IR components. In addition to no radiation injury to human bodies, the invention also avoids overlapped shadows in the case of multiple LED sources. Such a design of the cold and single light source can effectively bad influences on the precision of objects 31 being processed.

The invention discloses a shading ring processing method and a shading ring. The method comprises the following steps that the shading ring is provided, the shading ring comprises a body, an anti-static coating and a through hole, the anti-static coating coats the body, the through hole is formed in the body, the body is made of plastic materials, and the anti-static coating is a carbon dust layer; the wall of the through hole is corroded through aqueous alkali to form a matte structure. According to the shading ring processing method and the shading ring, the shading ring is processed inside an ultrasonic generator through aqueous alkali so that the matte structure can be formed on the wall of the through hole of the shading ring, the poor phenomena of dazzling, halo, ghosting and the like caused by reflection of the wall of the through hole are avoided, and therefore the photographing effect is ensured and the photographing product quality is improved.

The invention discloses an image enhancing method based on self-adaptive block channel stretching. The method mainly solves two important problems of image defogging and exposure adjustment in image enhancement. In the prior art, many methods provide solution schemes for the two problems, but the methods have the defect that a plurality of thresholds for image adjustment are needed, and this kind of methods requires user interaction operation and fail to process a plurality of images at one time; in addition, in the prior art, fogged images and dark light images are taken as two kinds of image enhancing problems which are solved respectively, and a unified framework is lacked. Aimed at the defects of the existing methods, statistic learning is carried out on various kinds of images in a real world, a self-adaptive threshold of problem image adjustment is obtained, the manual interaction operation of a user is reduced, and the processing efficiency is improved; in addition, stretching conversion is simultaneously carried out on a highlight channel and a shadow channel of an image block, and the problem images including the fogged images and the dark light images can be enhanced under the same framework.

The invention discloses an infrared and visible light image fusion method based on side window guided filtering, and belongs to the technical field of image processing. The method comprises the steps:carrying out the fuzzy processing of an input infrared and visible light source image through employing a Gaussian filter, and obtaining a large-scale base layer; subtracting the base layer image from the infrared and visible light source images to obtain a detail layer image containing small-scale information; calculating correlation coefficients of the infrared light source image and the visible light source image to obtain a fusion weight coefficient of the base layer, and fusing the base layer image; obtaining an initial detail layer weight graph by using a maximum absolute value rule, optimizing the initial detail layer weight graph by using side window guided filtering, and fusing detail layer images; and carrying out secondary fusion by using the fused base layer image and detail layer image to obtain a final fused image. According to the invention, the fusion of infrared and visible light images can be realized, and the fused image can maintain good contrast.

A color image forming apparatus includes a photosensitive belt, which consists of a resinous base sheet and an organic photosensitive layer formed thereon. The photosensitive layer consists of a charge transport layer and charge generation particles dispersed therein. The image forming apparatus ensures good color image quality even if the developer used for this former is toner made of styrene-acrylic resin. The image forming apparatus also includes developing rollers in contact with the photosensitive belt. Suitable shearing force can be applied to the toner if the speed ratio of the developing rollers to the photosensitive belt ranges from 1.3 to 2.0. The developer includes an external additive which has a particle diameter of 30 or more nm. The external additive can effectively prevent printed sheets from halation.

To obtain various types of information on an observed portion such as a body tissue, white halation is effectively generated in images obtained by imaging the observed portion with a plurality of image sensors. A stereoscopic endoscope system including: a light illuminating unit which irradiates an observed portion with illumination light; an endoscope which has an objective optical system including a plurality of image sensors for receiving reflected light from the observed portion; an image analyzing unit which analyzes images obtained by the objective optical system; and a light amount distribution control unit which controls a light amount distribution of the illumination light based on an analysis result of the images.

A method (and apparatus) of improving an image quality of a video signal which is supplied on a frame-by-frame basis, includes extracting high frequency components associated with a video signal of an n-th frame (where n is a natural number), and adding the extracted high frequency components to a video signal of an (n+m)th frame (where m is a natural number).

The invention discloses an image blurring method and device, a terminal and a computer readable storage medium. The image blurring method comprises the steps of obtaining a background image in a firstimage; performing expansion processing on the background image to obtain a first processed image; blurring the first processed image, the expansion radius of the expansion processing being greater than the blurring radius of the blurring processing; and combining the blurred first processing image with the foreground part in the first image to obtain a blurred result image. Through adoption of the method, the problem of halo caused by image blurring can be well solved.

The invention provides a cutting device. The cutting device 2 is provided with a retaining working bench 10 used to retain a processed object 11. The retaining working bench comprises a retaining tool 14 and a tool base 12. The retaining tool is provided with a retaining surface 14a, which is used to retain the processed object; a plurality of retracting grooves 14c used for the cutting tool, which are disposed on the position of the segmentation predetermined line 19 of the processed object retained by the retaining surface; a plurality of absorption holes 14d, which are disposed in the various areas divided by the retracting grooves of the cutting tool. The tool base is provided with a negative pressure transmission part 12b, which is used to transmit negative pressure to the absorption holes; a carrying part (12a), which is used to carry the retaining tool. The retaining tool is provided with a plurality of cutting liquid overflow grooves 14e, which are adjacent to the retracting grooves used for the cutting tool in a corresponding way, and are provided with bottom surfaces 14g lower than the bottom surfaces 14f of the retracting grooves used for the cutting tool.

The invention discloses an LED illumination device which comprises a shell body and a plurality of LEDs; the LEDs form a plurality of LED light emitting modules sheltered in the shell body; at least two LEDs are arranged on each LED light emitting module; the light emitting modules are connected in parallel; the LEDs are distributed in outward-protruding arc face shape towards the light generating direction and form a light emitting array; at least two light emitting modules are respectively arranged on each row and line of the light emitting array; at least two of the light emitting modules have different luminous intensities.

The embodiment of the invention provides an image processing method and device. The objective of the invention is to solve the problem of the severe variegation phenomenon. The method comprises: performing global brightness enhancement process of the brightness component of the input image data based on a presetting algorithm, and obtaining the first image data; performing illumination filtering of the brightness component of the first image data by using bilateral filtering, and obtaining the second image data; and determining the feedback coefficient of the saturation component of the first image data, regulating the brightness component of the second image data based on the feedback coefficient, and obtaining and displaying the output image data. The generation of halation is effectively avoided.

The invention, which belongs to the technical field of water purifiers, particularly relates to a water purifier display device and a control method thereof, and a water purifier. According to the control method, a light sensor detects ambient light information received by a display panel and the light information is sent to a controller; the controller processes the light information and determines the light intensity of the display panel; and the controller changes a display drive signal and adjusts the brightness of the display panel. Therefore, the display brightness is adjusted automatically based on the light. When the ambient light is dark, the brightness of the display panel is slightly reduced, so that phenomena that the light is too bright and the halo of the display icon occursare avoided and thus the display panel carries out displaying clearly. When the ambient light is bright, the display brightness is increased. Moreover, the functions, intelligence, and humanization ofthe water purifier are enhanced; and the user experience is improved.

The present invention provides an image display device in which it is possible to obtain an image display of high brightness and high contrast by preventing the halation which may be generated in a peripheral portion of a display image. By providing a carbon film which attenuates the reentry of secondary electrons, which are generated when electron beams impinge on an anode, to a back surface of the anode, even when primary electrons impinge on the anode, the secondary electrons are hardly emitted from the anode. At the same time, a trace amount of emitted secondary electrons are mainly formed of electrons having a small energy. Hence, these emitted secondary electrons are scattered and hardly reenter the anode.

The invention provides a method and a device for inspecting the inner surface of a cylinder hole, which can accurately inspect damage on intersection lines of the inner surface of the cylinder hole without depending on human eyes. A light source (24) located at a position outside an opening surface of a cylinder hole (B) of an engine (E) irradiates light toward the inside of the cylinder hole (B), and a camera (23) outside the opening surface of the cylinder hole captures an image of reflected light from the inner surface of the cylinder hole and reflected on a mirror (25) inserted into the cylinder hole. The light source (24) and the mirror (25) are rotated in the circumferential direction of the cylinder bore and moved in the axial direction of the cylinder bore, thereby inspecting damage occurring on the intersecting line of the inner surface of the cylinder bore.