119 results about "Visual contrast" patented technology

An image display device according to the present invention is capable of presenting to a viewer a high-quality lustrous video on a display screen with best screen brightness by increasing visual contrast and avoiding loss of true black elements without widening a dynamic range of a picture signal. The image display device is provided with a liquid crystal display portion (11), a display control portion (14), a backlight (12), a backlight control portion (13) and an average brightness detecting portion (15) and detects brightness of the light source in accordance with the average brightness of a picture signal to be displayed. It is further provided with a peak detecting portion (16) and corrects the control of the backlight control portion (13) in accordance with a detected peak value of a picture.

A laser imageable flexographic printing plate precursor comprises a thermoset elastomeric upper layer that is at least partially ablatable and comprises a radiation sensitive compound, and a non-ablatable elastomeric underlayer. This flexographic printing plate precursor can be imaged to provide a printing plate that is primarily useful for “high quality” printing because the resulting relief image is generally not greater than 600 μm and has an extremely even “floor”. The imaged flexographic printing plate also can have a high visual contrast between the imaged areas and the non-imaged background areas.

The invention discloses an infrared weak target detection method based on the visual contrast mechanism. The infrared weak target detection method based on the visual contrast mechanism comprises the following steps: (1) extracting a 8-direction gradient saliency map of the original infrared image; (2) performing binarization processing on the 8-direction gradient saliency map to obtain a gradient saliency binarization map; (3) performing optimizing processing on the gradient saliency binarization map according to the size feature of the weak infrared target and eliminating isolated noise points and large size background gradient saliency regions to obtain an optimized gradient saliency binarization map; (4) using the visual contrast mechanism to calculate the local contrast of the saliency region of the optimized gradient saliency binarization map, eliminating the false targets to obtain the gradient saliency binarization map with the visual contrast mechanism processing; (5) positioning the target in the original infrared image according to the gradient saliency binarization map with the visual contrast mechanism processing to complete the detection of the weak infrared target. The infrared weak target detection method based on the visual contrast mechanism solves the problem of low detection precision of weak infrared target with low signal to noise ratio.

The drainage pipe slope measuring device includes a housing having an upper surface and a lower surface. The upper surface has an opening formed therethrough, the lower surface preferably having a substantially concave or arcuate cross-sectional contour adapted for flush mounting against the drainage pipe. A spirit level vial is mounted within the housing and is positioned adjacent the opening. The vial is preferably formed from at least partially transparent or translucent material and is adapted for containing a liquid and a gas bubble. Indicia is formed on the container and is visible through the opening so that, when the housing is mounted on the drainage pipe, a position of the gas bubble with respect to the indicia provides the user with a visual indication of the slope of the drainage pipe. The vial is preferably divided into separately colored regions to provide the user with further visual contrast.

The present invention provides a multi-mode calibration target operable to calibrate multiple optical sensors. One embodiment has multiple planar surfaces, wherein the multiple planar surfaces are able to be distinguished by visual sensors based on their color, hue, shade, tint, or tone. Additionally, these planar surfaces may be raised or recessed from one another to provide depth contrast as well as visual contrast. Other embodiments may include narrow band emitters such as laser diodes located at predetermined locations within the multi-mode target. These targets may then be used to calibrate various sensors, such as optical sensors, within an inspection system such as a laser ultrasonic inspection system.

The present invention relates to a coated liquid-filled soft capsule containing a colored shell and method for making same. The shell material contains a colorant incorporated in the material in an amount sufficient to provide a visual contrast between the capsule shell and any liquid fill that escapes from the capsule shell and resides on an exterior surface of the capsule shell. This allows leaking capsules as well as other capsules that get contaminated from the leaking capsules to be identified before they are coated. This prevents coating problems in pan and/or continuous coaters associated with leaking and/or contaminated capsules. The present invention also produces pharmaceutically elegant capsules uniform in appearance without the necessity of coloring the coating.

A document may include a non-magnetic substrate, a first colorant mixture printed as a first image upon the substrate, the first colorant mixture including a magnetic ink, and a second colorant mixture printed as a second image upon the substrate in substantially close spatial proximity to the printed first colorant mixture. The second colorant mixture may consist essentially of one or more non-magnetic inks and exhibit properties of both low visual contrast and high magnetic contrast against the first colorant mixture, such that the resultant printed substrate does not reveal the first image to the human eye, but will reveal the first image to a magnetic image reader.

The invention discloses an infrared and visible light image fusion method based on a multi-scale contrast ratio. On the basis of the multi-scale contrast ratio obtained by calculation, according to different decomposition detail ranges of each scale, the fusion weight of an infrared image and a visual light image in each layer of scale information is independently determined, a corresponding multi-scale information fusion strategy is designed, and therefore, an infrared and visible light fusion image has a better visual effect. A contrast sensitivity function which represents human visual characteristics is combined to extract the multi-scale contrast ratio which exhibits visual sensitivity, visual sensitivity information is highlighted, so that the fusion image has a better visual effect, and the perception of an observer for a scene and the quick identification ability of the observer for an important target can be enhanced. By use of the method, while the contrast sensitivity function which represents human visual characteristics is combined, the mask effect of a visual contrast ratio is considered, visual sensitivity characteristics are effectively utilized to guide a fusion process, and the visual effect of the fusion image is further enhanced.

The invention requests to protect an adaptive infrared image enhancement method based on a visual contrast resolution model. Based on the fact that the resolution of human eye vision differs obviouslyin different grayscale ranges, the grayscale value of an image is divided into three stages which correspond to the dark vision, the middle vision and the bright vision of the human eyes respectively, and then, corresponding human eye visual contrast resolution models are established. According to the obtained grayscale difference between an image target and background and the models, the image target is adaptively mapped to a human eye sensitive area and the image background is mapped to a human eye insensitive area, and simulation and verification are carried out through an actual infraredimage. The method of the invention has the advantages of simple implementation process, small amount of computation and obvious image enhancement effect, and has application and popularization values.

An original work of art, and its method of manufacture, requires a substrate on which layers of viscous ink are sequentially applied to create a plurality of visual contrasts. Each contrast may have its own predetermined number of ink layers. A color print layer is then applied over the contrasts to create the work of art. Importantly, each layer of viscous ink is individually applied, and is individually cured with UV radiation, before a subsequent layer is applied. In this process, each layer may contribute to one or more contrasts. The color print layer is then applied using a computerized color printer.

A transfer decal retail product unit includes a transfer decal assembly, which can optionally be mounted on a display card. The assembly includes a liner comprising a material that contrasts visually with a graphic material releasably mounted thereon. An optional clear, transparent mask is releasably mounted on the graphic material and is adapted for removal after installation. The visual contrast between the liner and the graphic material facilitates point-of-purchase sales by attracting customers.

The present invention provides a method for using infrared light either alone or in conjunction with visible light to create an improved system for cytologic examination. As stated above, infrared light is sensitive to molecular and biochemical changes and can thus be used to identify specific chemical species or substances. This characteristic can be used to identify areas on a slide most likely to contain an abnormality, and can further provide information to overlay on an image of the slide to enhance the visual contrast for the human screener. This process of image enhancement via the use of multivariate spectroscopy can be used to dramatically enhance the information content provided to the medical professional.

Systems and methods that utilize an adjustment mechanism for adjusting the polarization angle of a light source relative to the polarization angle of a viewing filter, so as to permit adjustment of visual contrast between interposed specular media and an object to be viewed and/or photographed, wherein the interposed specular media is an atmospheric phenomenon comprising a seemingly infinite number of dispersed specularly reflective particles enveloping at least one of an observer or a scene of interest. The light source includes a light generation mechanism for generating polarized light, and an optional source polarization angle determination mechanism for adjusting the angle of polarization of the light source. The viewing filter includes a filter polarization angle adjustment mechanism for adjusting at least one of the polarization angle of maximum light attenuation and the polarization angle of minimum light attenuation.

A transfer decal retail product unit includes a transfer decal assembly, which can optionally be mounted on a display card. The assembly includes a liner comprising a material that contrasts visually with a graphic material releasably mounted thereon. An optional clear, transparent mask is releasably mounted on the graphic material and is adapted for removal after installation. The visual contrast between the liner and the graphic material facilitates point-of-purchase sales by attracting customers.