53results about How to "Color difference" patented technology

A spectacle lens (2) has an antireflective coating (1). The antireflective coating (1) produces a residual reflection appearing color-neutral not only under illumination with a natural daylight spectrum, but also under an illumination with an illumination spectrum deviating from the natural daylight spectrum. A method for making a spectacle lens (2) having an antireflective coating (1) is described in which an optical lens (2a) is provided and a layer sequence of layers (3, 4, 5, 6, 7, 8, 9) with alternately high and low refractive material forming the antireflective coating (1) is applied to the optical lens. The antireflective coating (1) is applied with the proviso that the antireflective coating (1) produces a residual reflection appearing color-neutral not only under illumination with a natural daylight spectrum, but also under an illumination with an illumination spectrum deviating from the natural daylight spectrum.

A compound-eye imaging device comprises a flash control means for controlling a flash unit to alternatively emit two kinds of near-infrared lights having different wavelengths while multiple single-eye images are read using a rolling shutter; a single-eye image reading means for reading, from the single-eye images, a single-eye image (hereafter “pre-change single-eye image”) imaged under a first illumination condition before an illumination condition change by the flash control means, and a single-eye image (hereafter “post-change single-eye image”) imaged under a second illumination condition after the illumination condition change; and an eye position detecting means for detecting eye positions in the single-eye images based on a comparison between the read pre-change and post-change single-eye images. This imaging device can further comprise: a face extracting means for extracting a face area based on the detected eye positions; and a personal identification means for performing personal identification based on the extracted face area.

First RGB image signals are inputted. Color difference signals Cr and Cb are calculated from the first RGB image signals. In a feature space formed by the color difference signals Cr and Cb, a first process is performed such that coordinates corresponding to a second observation area are moved to a reference area containing the origin point while coordinates corresponding to first and third observation areas are maintained unchanged. A second process is performed to move the coordinates corresponding to the first observation area and the coordinates corresponding to the third observation area away from each other.

In an ink jet printing apparatus using many types of inks to execute bidirectional printing, if ejection opening rows for yellow, magenta, and cyan inks are symmetrically arranged, ejection opening rows for a black ink are arranged adjacent to the most inside ejection opening rows for the yellow ink. Thus, a difference in color between forward scanning and backward scanning is determined by a difference in coloring between the black ink and the yellow ink. In this case, a possible color drift attributed to bidirectional printing can be suppressed by selecting the inks so that the difference in coloring between the black ink and the yellow ink is smaller than that between the black ink and the other color inks.

A base image is created from RGB image signals. A B / G ratio between the B image signal and the G image signal is calculated, and a G / R ratio between the G image signal and the R image signal is calculated. A frequency component-enhanced image in which a frequency component corresponding to an abnormal part different from a normal part is enhanced is generated based on the base image. A composition ratio which indicates the ratio for composing the frequency component-enhanced image with the base image is set based on the B / G ratio and the G / R ratio. The frequency component-enhanced image is composed with the base image at the set composition ratio to generate a structure-enhanced image in which the structure of the abnormal part is enhanced.

First RGB image signals are inputted. Color difference signals Cr and Cb are calculated from the first RGB image signals. In a feature space formed by the color difference signals Cr and Cb, a first process is performed such that coordinates corresponding to a second observation area are moved to a reference area containing the origin point while coordinates corresponding to first and third observation areas are maintained unchanged. A second process is performed to move the coordinates corresponding to the first observation area and the coordinates corresponding to the third observation area away from each other.

An image-processing device for performing processing of coloring a skin of an image of a person with a pattern in a certain color, comprising a color-correction unit that corrects the color of the pattern to determine a color for each region such that the color of the pattern applied to each region varies in a plurality of regions colored with the pattern in the image of the person; and a coloring unit that colors the image of the person with the pattern by superimposing the color for each region on a color of each region of the image of the person.

A transparent display apparatus and an image adjustment method thereof are provided. The image adjustment method includes following steps. A background image information is obtained according to a background scenery at a first side of the transparent display panel. At least one of a plurality of color attributes of a display image is adjusted according to the background image information. The adjusted display image is output at a second side of the transparent display panel.

Disclosed is a plunger rod for a syringe. The plunger rod is useful for sliding a piston within a syringe barrel. The plunger rod is characterized in that it is colored in part or in whole. The syringe is also disclosed. According to such plunger rods, even plural syringes of exactly the same external appearance and configuration can be applied with features that make it possible to readily and visually identify them by simply taking a glance at their appearances without needing a measure such as applying indication members such as labels on them. Further, the use of such plunger rods makes it possible to provide syringes of significantly enhanced visual identifiability without impairing high-level quality, functions, sanitariness and safety required for the syringes.

Color image data composed of pixels arranged in a matrix wherein colors are expressed in bit rows is created from an acquired document file, and same-resolution binary image data and low-resolution binary image data composed of binary pixels arranged in a matrix are created based on the color image data. A first combining process is performed in which a lower bit value of a predetermined color of the pixels of the color image data is replaced with the value of the corresponding ones of the pixels of the same pixels, and a second combining process is performed in which a lower bit value of a color other than the bit replaced in the first combining process in the pixels of the first combined image data is replaced with the value of the corresponding ones of the pixels of the low-resolution binary image data.