63 results about "Local color" patented technology

The invention discloses an image sorting method based on local colors and distribution characteristics of characteristic points, which mainly solves the problem of the poor effectiveness of image characteristic description and the ambiguity in image understanding in the prior art. The method comprises the following steps of: firstly, performing scale normalization and rotation normalization on the image, and detecting characteristic points; then, dividing the normalized image into a series of fan-shaped sub-regions with unequal acreage according to the distribution of the characteristic points, and extracting the local colors and the space distribution characteristics of the characteristic points in each sub-region, generating a characteristic vector, measuring the similarity and orderingthe sub-regions; taking the image as a multi-instance package to obtaining characteristics of a target image through a multi-instance learning method; and finally, recalculating the similarity, and outputting the sorting result. The method not only improves the effectiveness of the image characteristic description, but also reduces the ambiguity in the process of sorting out the images, so that the method can sort out internet images more accurately, and can be used for searching image information in the internet.

The invention relates to a specified adaptive illumination migration method and system in a cross-camera scene, and the method comprises the steps: carrying out the close image clustering of a targetimage and a source image according to a fuzzy clustering algorithm, carrying out the local color brightness migration between clustered images, and introducing a membership factor to improve the colorbrightness migration effect. According to the invention, the illumination difference of images under different cameras is weakened, and the adverse effect caused by the illumination difference is reduced.

The invention discloses a non-repetition multispectral / hyperspectral remote sensing image color uniformizing method based on FCM clustering matching and Wallis filtering, and relates to a multispectral / hyperspectral remote sensing image color uniformizing method. The objective of the invention is to solve the problem of poor effect of an obtained image due to the fact that color uniformization between images without overlapping regions is not involved in an existing method. The method comprises the following steps: 1, carrying out band-dividing processing on a multi-spectral / hyperspectral remote sensing image; 2, selecting a reference image as a reference; 3, obtaining a result after clustering; 4, performing category matching; 5, obtaining various types of data after local color uniformization processing; 6, synthesizing a new to-be-homogenized image; 7, carrying out the histogram matching, and carrying out the color uniformization; 8, repeatedly executing the steps 3-7 by taking theimage subjected to the color uniformization processing as a reference image until all grayscale images in the same waveband are subjected to color uniformization processing, and splicing the images; 9, repeating the steps 2 to 8 to obtain all spliced images, and synthesizing a new multispectral / hyperspectral remote sensing image. The method is applied to the field of image color uniformization.

The invention discloses a multi-high-resolution remote sensing image mosaic method considering surface feature category difference. The method comprises the steps of performing geometric registrationand overlapping region coordinate determination on high-resolution images; performing color uniformization on the whole input image by using a histogram matching method by adopting an integral and local color matching strategy, and further performing local color uniformization on different ground objects by using a moment matching method; generating an initial seam line network by utilizing the Voronoi diagram; endowing different ground objects in the overlapping area with different weights, searching for a path with the minimum total weight in the buffer area based on a dynamic planning method, and taking the path as an optimized seam line network; and eliminating splicing seams by using an inverse distance weighted image fusion algorithm to obtain a final mosaic image. According to the method, the tone consistency of the mosaic image on the whole can be ensured, the local chromatic aberration can be remarkably weakened, the joint line network bypassing the building can be automatically generated, the error accumulation of searching the joint lines one by one is effectively avoided, and the mosaic image with visual nature is quickly obtained.

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.

Provided are a color moire reducing method, a color moire reducing apparatus, and an image processing apparatus. The color moire reducing method includes calculating a plurality of local color mean values around a pixel in a selected region of a current image, calculating difference values between the local color mean values and a maximum difference value from among the difference values, and setting a moire correction weight to the pixel on the basis of the maximum difference value.

The invention relates to the technical field of architectural ceramics, and particularly discloses a preparation method of a cloth-pattern-imitated rock plate, which comprises the following steps: S1, applying cover glaze to a green body and drying; S2, printing a pattern by adopting oily matte ink and ceramic ink-jet ink; S3, applying a velvet-like glaze material; S4, applying a particle-like glaze material, and then drying; and S5, firing. According to the invention, the texture pattern with a three-dimensional effect is preliminarily formed on the surface of the green body through the oily matte ink, the unique velvet texture of the cloth grains is reduced by combining the velvet-like glaze, and then the soft fine particle texture of the cloth grains with slight fluctuating particles is reduced by superposing the granular-like glaze, so that the unique texture of the cloth grains is highly reduced; in addition, the velvet-like glaze and the particle-like glaze can make the color development of the ceramic ink-jet ink more uniform, local color difference is avoided, and the manufactured cloth-pattern-like rock plate is high in reduction degree, fine and smooth in hand feeling and good in decoration effect; the velvet-like glaze and the granular-like glaze can also endow the rock plate with high hardness and high wear resistance, and the prepared rock plate is excellent in antifouling property and scratch resistance.

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.

Disclosed is a method for generating an image from a source image for encoding a projection of a part of a three-dimensional scene. Pixels of the source image comprise a depth and a color attribute. Pixels of the source image are de-projected as colored point cloud. A de-projected point in a 3D space has the color attribute of the pixel that it has been de-projected from. Also, a score is attributed to the generated point according to a local depth gradient and / or a local color gradient of the pixel that the generated point comes from, and the lower the gradient is, the higher the score is. In a second step, the generated point cloud is captured by a virtual camera for rendering on a display device. The point cloud is projected onto a viewport image by blending color of points projected on a same pixel, the blending being weighted by the scores of these points.

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.

A method and system for performing color-color correction for printing a plurality of print jobs includes: receiving a first print job, wherein the first print job has one or more documents; receiving a second print job, wherein the At least a portion of one of the documents is different from a corresponding document in the first print job; and a copy of the first print job is printed. The one or more processors are operable to determine a plurality of color plane registration errors generated during printing of copies of the first print job, local color plane correction values ​​based on the plurality of color registration errors, and the first print job and the second print job. Differences between corresponding documents in the print job. When the amount of difference is less than a predetermined threshold, the local color plane correction value is used to print the second print job.