65 results about "Local color" patented technology

A system and method enable similarity measures to be computed between pairs of images and between a color name and an image in a common feature space. Reference image representations are generated by embedding color name descriptors for each reference image in the common feature space. Color name representations for different color names are generated by embedding synthesized color name descriptors in the common feature space. For a query including a color name, a similarity is computed between its color name representation and one or more of the reference image representations. For a query which includes a query image, a similarity is computed between a representation of the query image and one or more of reference image representations. The method also enables combined queries which include both a query image and a color name to be performed. One or more retrieved reference images, or information based thereon, is then output.

The invention discloses a method and a system for controlling a local color gamut, a backlight source and a display device. The method comprises the steps of receiving an image signal of a frame to be displayed; resolving the image signal to obtain a high-color-gamut region in the frame to be displayed, wherein a color-gamut value of the high-color-gamut region exceeds a preset range; controlling different regions of the backlight source according to the high-color-gamut region. In the method, the image signal to be displayed is analyzed and divided into a high-color-gamut region and a low-color-gamut region according to the color-gamut value, the high-color-gamut region is obtained according to an analysis result, control of different regions of the backlight source is achieved, and only a low-color-rendering LED lamp is required to be lightened on in several regions in which high-color-gamut images are not required to be displayed. Therefore, the power consumption of the backlight source can be reduced while the frame quality is ensured, and the energy-saving purpose is achieved. The invention further provides the system for controlling the local color gamut based on the method, the backlight source and the display device including the backlight source. Energy saving is achieved.

The invention describes a process for local coloring treatment of sterling silver commemorative coins / chapters, using sandblasting technology to sandblast the surface of silver coins, using Al 2 o 3 or Cr 2 o 3 Sand; immerse the silver coins after sandblasting in the prepared solution for overall vulcanization treatment; desulfurize the silver coins after the overall vulcanization treatment; perform partial vulcanization treatment on the designated area of ​​the silver coin; perform post-processing on the partially vulcanized silver coins , making the vulcanized part appear colored. The local vulcanization treatment of the technical solution of the present invention makes the surface of the silver coin partially colored, and the partially colored silver coin will not change in color during daily use and for a long time. Through the process of the present invention, the commemorative coin The surface has increased anti-corrosion and anti-discoloration capabilities, ensuring that the appearance of commemorative coins will not be affected by external factors; reducing the traditional complex process, greatly reducing the dependence on equipment, and greatly reducing the harm to the environment.

The present invention provides a method for repairing images in cultural collections based on self-color transfer, which includes the following steps: S1 to obtain the original image of the skeleton texture image, S2 to repair the damaged part, S3 to remove the background color and inlay the skeleton texture image, and S4 to obtain the local color migration source image , S5 obtains the local color migration reference image, S6 performs local color migration, S7 accurately fills the damaged parts, and S8 repairs other damaged parts in the image. The self-color restoration of the present invention saves the search step of the reference image and replaces it with the intact part of the image to be repaired, which saves repair time and improves the repair effect; reduces the manual pressure of the restorer and other workers, and obtains better virtual effects for the restorer to refer to , to increase the repair rate.

The invention relates to a method for color correction of a consistent stereoscopic image based on gradient maintenance. Firstly, feature extraction and matching are performed on a reference image and a target image by using SIFT feature extraction and matching to obtain a structural image and a matching image; then, the structural similarity is used The algorithm generates a confidence map of the matching image and the target image, performs local mapping on areas with low confidence in the image, and generates an initial color correction result image; finally uses the gradient-holding algorithm to reference the color and structure of the initial color correction result image Optimize to get the final result image. The invention solves the structural consistency problem of the local color correction algorithm and the regional color confusion problem of the global color correction calculation, and also retains the gradient information of the image, thereby improving the fidelity of the image.

An LED 3D display device includes: multiple groups of light emitting diodes, each group of light emitting diodes is provided with sub-pixels composed of four single primary color luminous bodies; multiple groups of prisms are symmetrically arranged on both sides of any sub-pixel; Each sub-pixel forms two groups of images through its adjacent prisms, which are respectively projected into the left and right eyes of the viewer. Multiple groups of prisms are symmetrically arranged on the left and right sides or the top and bottom sides of any sub-pixel, and the sub-pixels are distributed in strips or squares. The sub-pixels of different columns are arranged in a staggered manner, so that after different pixels pass through the prism, the color is more uniform and soft, and the light penetration effect is good, which solves the phenomenon of high contrast of each color and too deep local color. In addition, when the pixels are arranged in a square shape, the width of the prism increases. This arrangement reduces the display resolution, but the color is uniform. It is more suitable for the application of large-scale 3D display devices, and the manufacturing requirements are low. It is suitable for large-scale LEDs. TV Wall.