Abstract:
An apparatus for identifying differences in the visual and recorded appearance of colors and gray tones illuminated by light sources having different spectral distribution and having: a first image with illumination, with separate and different colour elements and with gray scale elements, apertures in the first image adjacent to the elements, a second image with illumination having a plurality of separate elements of colour and gray scale, corresponding to the elements of the first image so that the elements on the second image are viewable through the apertures in the first image, with corresponding colour and gray scale elements adjacent to one another in the first and second images, and a method of comparing light quality using such apparatus.
Abstract:
A person can create a desired color through use of a visual aid or tool. The aid or tool may include a plurality of color lines, provided on a medium, on which color can be blended. The plurality of color lines may include: (i) a primary set of color lines, each providing a corresponding primary color that is different than a primary color of another color line in the primary set, and (ii) a secondary set of lines, where each color line in the secondary set is for a corresponding secondary color. Each color line in the primary set includes a plurality of color formations, and each color formation may have a common range of hues that are different of hues of the other color lines in the primary set. The plurality of color formations of each color line are arranged from a highest intensity to a lowest intensity. Each color line in the secondary set includes a plurality of color formations for the corresponding secondary color. The plurality of colors for each color line in the primary set and in the secondary set are arranged from a lowest intensity to a highest intensity. One of the color lines may be identified as either containing the desired color or containing a first primary component of the desired color. Once identified, one of two actions may take place: adjacent color formations from a single color line may be mixed, or color formations from adjacent color lines of relatively equivalent intensity are mixed.
Abstract:
The invention relates to a method and a system for automatic determination of colors, which can in particular be applied in online commerce. The invention makes it possible for a provider, for example, to indicate the correct color of merchandise, so that a customer can knowingly find, order and acquire the merchandise. To this end, it is proposed that the color to be determined is recorded together with at least one reference color. The recorded data is read. The recorded data of at least a portion of the reference color is compared with stored comparison values of the reference colors. The color to be determined is automatically determined by evaluating at least a portion of the recorded data of the color to be recorded and of at least a portion of the difference values determined in the comparison between read-in data and stored comparison values.
Abstract:
There is disclosed a method for preparing a color chart comprising the steps of defining a reference color, specifying a range of colors from said reference color, each color being spaced by integral multiples of a preselected color difference value from any other color, the range spanning the color space between the reference color and some other color.
Abstract:
A color measurement device comprising a means for electronically recording a digital color image, a target holder extending from the recording means having a distal end, and a target at the distal end of the holder, the target having one or more reference color regions thereon.
Abstract:
In order to overcome difficulties which arise when making conventional color charts and color spaces, a torus-shaped spacial structure is used as base body for the arrangement of color tones.The gray tones are located at the outermost jacket area thereof and the clearest colors are located at the inner jacket area thereof. In the inside of the body, the colors extend through all color tone steps from the clearest up to the gray tones. By means of an iterative method for the arranging of color tones in the torus, it is possible not only to discriminate the color tones for the human eye equidistantly, but also to represent the brown colors reliably.
Abstract:
A test sample color comparison device is disclosed which has a casing unit with an insertion slot for inserting a color test sample therein, and a display section for displaying the color test sample adjacent at least one of a plurality of reference color shades, as the reference color shades are successively moved into position adjacent the color test sample by a manipulation wheel. When an operator determines that a reference color shade adjacent the test sample corresponds in color to the color of the test sample, he pushes a switch to cause a readout of stored information corresponding to the reference color shade then adjacent the test sample. Readout of the stored information is based on a bit pattern set by a plurality of converter switches which are turned on and off in different patterns which correspond to the different color shades as the reference color shades are moved into position by the manipulation wheel. An uneven pattern code section moves in association with the manipulatable wheel and actuates the converter switches. A preferred uneven pattern code section is arranged so that all of the converter switches are actuated roughly equally during a full rotation of the manipulatable wheel, and so that only one of the converter switches is switched on or off during incremental movement of the manipulable wheel.
Abstract:
A hue compass has triplet numerical values assigned to colors so that every possible color is identified with a unique triplet color identification number which represents the percentages of each primary color component present. Triplet values 100/0/0, 0/100/0, and 0/0/100 can be assigned to additive primaries blue-violet, green, and red, respectively. Their complementary colors yellow, magenta, and cyan can be assigned triplets 0/100/100, 100/0/100, and 100/100/0. Likewise, triplet values 100/0/0, 0/100/0 and 0/0/100 can be assigned to subtractive primaries yellow, magenta, and cyan, respectively. Their complementary colors, blueviolet, green, and red can be assigned 0/100/100, 100/0/100, and 100/100/0. A color robot can be employed to assign a triplet value for a given colored test object, whose color can be matched, e.g. by blending appropriate amounts of respective primary color pigments or dyes whose triplet color identification numbers are known.