Abstract: One embodiment of a method for calibrating a test color measurement device in conjunction with an emissive display includes measuring initial spectral sensitivities of at least four channels of the test color measurement device, linearly regressing the spectral sensitivities to a least-square best fit to CIE color matching functions, measuring CIE tristimulus values of test colors on the display using a reference color measurement device, measuring the CIE tristimulus values on the display using the test color measurement device, transforming the CIE tristimulus values measured by the test color measurement device to CIE tristimulus values that would have been measured by the reference color measurement device, using a nonlinear function with variable fitting coefficients, and storing initial fitting coefficient values that provide a least-square best fit of the CIE tristimulus values measured by the test color measurement device and the CIE tristimulus values measured by the reference color measurement devic

Abstract: A system and apparatus for the color calibration of images recorded through a microscope. An integrated color calibration target microscope slide device and specimen are recorded with an imaging device that acquires both the color values of the specimen and the color values of the color calibration target under a plurality of illuminations and trans-illuminations. A composite image is formed to provide a spectral estimation of the relevant color values of the image. The image is converted into multi-stimulus values governed by a plurality of illuminating conditions. The multi-stimulus values are used to provide image calibration data so that color values of the image, when displayed on a display devices, are faithfully reproduced.

Abstract: A method for evaluating a color of a sample includes acquiring an image having a plurality of pixels from a sample and a plurality of pixels from known color calibration patches. The image is color calibrated using the known color patches to endow the pixels from the sample with the tristimulus values they would have under one or more known illuminants. The calibrated image is transmitted, together with metadata, to a remote location where further computations and an approval process are performed. The further computations include comparing all of the pixels in the image of a standard that are of a first color to all pixels of a second color in the similarly calibrated image of the sample, where the second color is a color in the image of the sample that is most similar to the first color from the image of the standard.

Abstract: One embodiment of a method for calibrating a test color measurement device in conjunction with an emissive display includes measuring initial spectral sensitivities of at least four channels of the test color measurement device, linearly regressing the spectral sensitivities to a least-square best fit to CIE color matching functions, measuring CIE tristimulus values of test colors on the display using a reference color measurement device, measuring the CIE tristimulus values on the display using the test color measurement device, transforming the CIE tristimulus values measured by the test color measurement device to CIE tristimulus values that would have been measured by the reference color measurement device, using a nonlinear function with variable fitting coefficients, and storing initial fitting coefficient values that provide a least-square best fit of the CIE tristimulus values measured by the test color measurement device and the CIE tristimulus values measured by the reference color measurement devic

Abstract: In one embodiment, present invention is a method and apparatus for automatically adjusting home theater display settings. One embodiment of a method for adjusting a setting of a home theater display includes receiving at least one measurement of the setting from a user and directing the user to adjust the setting in response to the received measurement(s), where the degree of the adjustment is determined in accordance with a perceptual scale.

Abstract: Systems, methodologies, media, and other embodiments associated with color measuring are described. One exemplary system embodiment includes a spectrophotometer, one or more light sources for illuminating an interior of the spectrophotometer, and a digital camera configured at a port of the spectrophotometer and being configured to measure light components from a sample. In the present invention, segmentation logic is provided for the spectrophotometer that is configured to employ computational image segmentation to characterize specular reflection from a sample and to characterize a selected patch or portion from the test sample, such as a selected color in a multicolor pattern. In accordance with the present invention, the spectrophotometer and the included digital camera may be color-characterized in situ.

Abstract: A channel is inserted into a sequence of frames for an image, by varying one or more display characteristics across a display in accordance with a spatio-temporal pattern applied to, for example, successive lines of each modified frame. The channel may be employed to watermark the image, and the watermark may be defined as W(x) and its complement [1−W(x)] in counter-phase rotations of successive lines in pairs of frames. The watermark information is applied in relatively still portions of the image with sufficient lightness level. A receiver includes a watermark detector that has a priori information about the watermark. The watermark detector examines specific regions of the displayed image over time, and tests the regions for the watermark during time intervals when the image remains relatively still.

Abstract: A channel is inserted into a sequence of frames for an image, by varying one or more display characteristics of the resulting image across the display in accordance with a spatio-temporal pattern applied to, for example, successive lines of each modified frame. In some cases, a reverse of the pattern is applied to a successive frame, and the frames modified are preferably B-frames if the image may be encoded in accordance with an MPEG standard. The channel may be employed to watermark the image, and the watermark may correspond to the presence of the channel or may be data in accordance with watermark information carried within the channel. For most display devices, display variations are minimized during the design process, but human viewers may still tolerate and accept subtle variations in a displayed image.

Abstract: A method and apparatus for assessing the visibility of differences between two input signal sequences, e.g., image sequences is disclosed. The apparatus comprises a perceptual metric generator having an input signal processing section, a luminance processing section, a chrominance processing section and a perceptual metric generating section.

Abstract: A method of constructing an image mosaic comprising the steps of selecting source images, aligning the source images, selecting source segments, enhancing the images, and merging the images to form the image mosaic is disclosed. An apparatus for constructing an image mosaic comprising means for selecting source images, means for aligning the source images, means for selecting source image segments, means for enhancing the images, and means for merging the images to form the image mosaic is also disclosed. The process may be performed automatically by the system or may be guided interactively by a human operator. Applications include the construction of photographic quality prints form video and digital camera images.