Abstract:
Examples of an imaging sensor include a two-dimensional staring sensor with spectral filter strips for multispectral overhead imaging. The sensor may also include a panchromatic sensor with block or strip filters. The sensor may be used to collect multispectral color image data at a sampling resolution from overhead imaging platforms such as airplanes or satellites. The sensor can be used to provide video images. If a panchromatic sensor is included, the sensor may be used to collect panchromatic image data. Examples of methods for processing the image date include using the panchromatic image data to perform multi-frame enhancement or panchromatic sharpening on spectral images to improve their quality and resolution.
Abstract:
An apparatus includes a database having a plurality of digital color images and a neutral gray background value for each of the images; a processor configured to receive search criteria and to identify one or more of the digital color images meeting the search criteria; and a display configured to display at least one of the identified digital color images on a neutral gray background, wherein the brightness of the neutral gray background is determined by the neutral gray background value for the image being displayed. A method performed by the apparatus is also provided.
Abstract:
A computer implemented method includes: providing a database of digital images of colors and metadata related to the colors; using one or more search criteria to identify one or more of the digital image colors; displaying the digital images of the identified colors; selecting a color of interest from the displayed colors; using the metadata to identify additional information related to the color of interest; displaying the digital image of the selected color and the additional information; and using the displayed digital image of the selected color and the additional information to make a final color selection. An apparatus that can be used to implement the method is also provided.
Abstract:
A method of determining the colour of teeth comprises providing a lip spreader 2 with an integral colour chart 1 positioned on the lip spreader 2, wherein the colour chart 1 comprises at least three different colours 5-13 with known characteristics; using the lip spreader 2 to expose a patient's teeth 4; by virtue of the integral colour chart 1, locating the colour chart 1 at a predetermined position relative to the teeth 4; capturing a digital image of the colour chart 1 and teeth 4 of interest, the digital image hence including image colours for the teeth 4 and image colours for the colour chart 1; electronically processing the digital image using the image colour for a selected tooth or tooth area, the image colours for the colour chart 1, and the known characteristics of the actual colours 5-13 of the colour chart 1; and thereby determining the actual colour of the selected tooth or tooth area.
Abstract:
A method in a data processing system, a data processing system, and a computer program in computer useable medium generating a numeric specification for one or more target colors that are useful for selecting colors in which a target lightness (Ltarg), a target hue (Htarg) and a target saturation (Ctarg) are determined based upon user inputs.
Abstract:
Verfahren zur Messung der Wolkigkeit von Lackierungen auf Prüftafeln unter Messung der Farbkoordinaten L*, a* und b* an jeweils mindestens 100 verschiedenen Messorten auf der Prüftafel unter jeweils mindestens 3 verschiedenen Beobachtungswinkein w, wobei (i) auf jede Gruppe n von Messwerten, die unter einem bestimmten Beobachtungswinkel w für eine bestimmte Farbkoordinate F* (F* = L* a* oder b*) an verschiedenen Messorten mit den Ortskoordinaten (x, y) erhalten wurden, ein Gauß'sches Glättungsfilter angewendet wird, so dass geglättete Messwerte n g erhalten werden, (ii) auf jede Gruppe n g von geglätteten Messwerten ein Sobel-Operator angewendet wird, so dass partielle dLab*-Werte und dLCH*- Werte erhalten werden, (iii) aus den erhaltenen partiellen dLab*-Werte und dLCH*- Werten die partiellen Farbtonabstände jedes Messpunkts zu seinen benachbarten Messpunkten mit Hilfe einer Farbtonabstandsformel berechnet werden, (iv) auf die ermittelten partiellen Farbtonabstände eine Non-maximum-Suppression angewendet wird, so dass korrigierte partielle Farbtonabstände erhalten werden, und (v) aus den so erhaltenen korrigierten partiellen Farbtonabständen der Homogenitäts-Index HI Hl = HI = 1n ∑ dE' dE'>0,35 mit dE' = Farbtonabstand berechnet wird und als Maß für die Wolkigkeit der Lackierung dient.
Abstract translation:一种用于测量涂层的混浊方法应用于通过测量色彩测试板中的测量值的每一组N个坐标L *,在每种情况下至少3种不同Beobachtungswinkein下测试面板w其中(i)至少100个不同的测量点上的a *和b *时, 某一观测角W为一定的颜色下坐标F *物在与位置坐标(x,y)时,高斯平滑滤波器应用于各个测量位置获得的,从而使(b * F * = L * A *或)平滑测量毫微克 获得,(ⅱ)被施加到平滑测量值的Sobel算子的每一个组NG,使得局部DLAB *值和DLCH * - 得到的值,(iii)从所述获得的部分DLAB *值和DLCH * - 值中的每个测量点的部分色彩距离由色差公式计算到其相邻的测量点,(IV)所确定的部分色彩距离的非最大 imum抑制被施加,以使得修正后得到的部分的颜色的距离,和(v)从均一性指数的如此获得的校正的部分色彩距离HI HI HI = = 1N? DE“DE”计算> 0.35与DE =色彩距离,并作为涂层的混浊的量度。
Abstract:
Devices and methods are disclosed for acquiring images and looking for objects within that image and alerting a user as to found objects. The preferred embodiment is the detection of red traffic signal lights as viewed from an automobile moving on a roadway and alerting a driver when a traffic signal is found. A second embodiment would be used to detect the green lights of traffic signals. The devices and methods are used to detect circular objects in the preferred embodiment. Transforms could also be used to detect other shaped objects and objects of colors other than red and green. The devices provide means to input operating parameters and alert drivers when target objects are found. Embodiments are included to improve the reliability and reduce false positive detection by rechecking color intensities within the coordinates of the found object.
Abstract:
The invention relates to a method and a device for screen calibration for the true-to-original reproduction of surface colors, the spectral reflection distribution of which is known, wherein by setting parameters the screen can be influenced using software and an electronic controller in each partial region of the screen. The invention is characterized in that an observer adapts the reproduced color impression of the screen to the color impression of an original in each partial region of the screen, wherein the original is compared to the screen colors immediately thereafter on the screen surface and the screen parameters are varied until the color impressions of the original and of the screen appear identical to the observer on the respectively viewed partial screen, viewed from a predefined observer angle, and the settings performed are stored in a screen profile.
Abstract:
Disclosed herein is a color space model conversion method, a recording medium containing a conversion method for color space model conversion, a color space defined by applying this method, and an apparatus (e.g. a computer product) for converting images to a color space defined by applying this method.
Abstract:
A system and a method are provided for maintaining accurate visual color performance of displays. In particular, various embodiments of the present invention described herein provide a system wherein partial color certification is incorporated into the calibration procedure. In the event that the partial color certification is out of tolerance, a full certification procedure is performed. If the full certification procedure is out of tolerance, the calculated errors of the certification procedure are utilized to perform an update to a baseline profile for the display. The updated baseline profile can either replace the existing baseline profile or can be concatenated with the baseline profile to preserve the baseline behavior of the display.