摘要:
What is disclosed is a novel system and method for determining the number of persons in an IR image obtained using an IR imaging system. The present method separates a human from the surrounding background via a set of particularly formed intensity ratios. Quantities derived from these ratios and threshold values are used to selectively classify whether a pixel in the IR image is from a human or from a non-human. Based upon the classification of the various pixels in the IR image, the number of persons is determined. Various embodiments are disclosed.
摘要:
This disclosure provides printing methods, apparatus, and systems to generate a multidimensional printer profile for a color printer. Specifically, the profile is generated by a method of selecting a recruiter set of nodes associated with a plurality of target color nodes and selecting a candidate set of nodes associated with a plurality of target color nodes. The candidate nodes and recruiting node cooperate to generate a printer profile.
摘要:
What is disclosed is a novel system and method for generating a hierarchical LUT for implementing a color transformation within a color imaging system. In one embodiment, a coarse LUT is received which comprises a plurality of sub-cubes arrayed on a plurality of coarse levels on a structured coarse grid. Each of the sub-cubes encompasses at least one coarse LUT node. Sub-cubes in the coarse grid are identified that are bisected by a boundary surface of the gamut. Then, each of the identified coarse LUT sub-cubes are associated with fine LUT which comprises a plurality of fine LUT nodes arrayed on a plurality of fine levels on a structured fine grid. A hierarchical LUT is generated from the coarse LUT and the associated fine LUTs. Thereafter, the hierarchical LUT can be used for color transformation within a color imaging system.
摘要:
An apparatus (100) and method (200) that controls color of a clear coated image on media is disclosed. The apparatus may include a controller (110) configured to control operations of the apparatus. The apparatus may include a memory (120) coupled to the controller. The memory may include reference color information corresponding to a desired color of an output image. The apparatus may include a front end (130) configured to provide a marking engine control signal corresponding to the desired color of the output image. The apparatus may include a color marking engine (140) coupled to the front end, where the color marking engine can be configured to generate an image on media responsive to the marking engine control signal using image output settings. The apparatus may include a clear coat finisher (150) configured to coat the image on the media with a clear coat to create a clear coated image on the media. The apparatus may include a sensor (160) configured to measure color attributes of the clear coated image and configured to provide color information of the clear coated image. The controller can be configured to determine a difference between the color information of the clear coated image and the reference color information and can be configured to adjust the image output settings according to the difference between the color information and the reference color information to achieve adjusted image output settings.
摘要:
What is disclosed is a novel system and method for retrieving a gamut mapping for a color device. A ray-based model is derived from a system estimation of either a seed profile or a seed device. The model is hard coded inside a run-time ICC profile creation algorithm. The runtime profile generation code can be optimized for a variety of gamut mapping scenarios. The generated profile is provided to an imaging system wherein out-of-gamut colors are mapped to the color gamut of the host device. The present method provides an accurate way to reproduce colors of images by retrieving the gamut mapping from profiles or from the color device that use destination profiles for rendering images.
摘要:
This disclosure provides methods, apparatus and systems for generating a multidimensional printer profile for a color printer. Specifically, the disclosure provides a method to blend multiple GCR functions or strategies to produce a final GCR blended printer profile, for example a printer profile LUT.
摘要:
A method and system is provided for obtaining an archival model of a selected print job executed in a network imaging system comprised of a plurality of imaging engines. The print job is archived to include job data comprising the imaging information defining the desired job and the production status performance data of the particular engine at about the time of the executing of the job. The job data and the engine performance data are associated and archived for later retrieval for enhanced temporal and distributed consistency in a reprinting of the job.
摘要:
What is provided are a novel system and method for determining a sensitivity matrix for adaptive color control in a color marking device capable of performing device independent color correction. In one embodiment, a determination is made as to what control operation the color marking device is being characterized for. Nominal CMYK values are then selected based on the determined control operation. If the control operation is a gray balancing operation, the nominal CMYK values are selected using C=M=Y=L* and K*=0 values. Otherwise, the nominal CMYK values are selected using a CMYK to L*a*b* printer map. Color parameters are determined for the CMYK values based on the selected nominal CMYK values. A sensitivity matrix is then generated from the color parameters and CMYK values. The method facilitates calibration of dynamically varying color reproduction devices.
摘要翻译:提供了一种用于在能够执行设备无关色彩校正的彩色标记装置中确定自适应色彩控制的灵敏度矩阵的新型系统和方法。 在一个实施例中,确定颜色标记装置的特征在于什么控制操作。 然后根据确定的控制操作选择标称CMYK值。 如果控制操作是灰色平衡操作,则使用C = M = Y = L *和K * = 0值选择标称CMYK值。 否则,使用CMYK至L * a * b *打印机映射来选择标称CMYK值。 基于所选的标称CMYK值为CMYK值确定颜色参数。 然后从颜色参数和CMYK值生成灵敏度矩阵。 该方法便于校准动态变化的色彩再现设备。
摘要:
An automatic gray balance control system to produce TRCs for all primary colors in a reproduction device and for each pitch of a photoreceptor system by printing target patches for each pitch, measuring the output colors, and automatically readjusting the tone reproduction curves until a satisfactory level of accuracy is obtained as compared to the theoretical desired output. The system produces pitch-based gray balanced TRCs that are updated frequently for each pitch, with different TRCs for different pitches, to ensure consistency in output from pitch to pitch as well as from page to page on a given pitch.
摘要:
A method and system for color calibration or color output device spectrophotoically measures at test target including a preselected test color value. A multi-dimensional LUT of the device is generated representative of the color information including the at least one preselected color. Producing a second image width device including the at least one preselected color located at a plurality of spatial locations in the second image. A second sensor measures the second image and a plurality of spatial locations having the preselected color for generating reflectance information for the preselected color at the plurality of spatial locations. An error is determined between the measured color of the one preselected color and the reflectance information at the other pixel locations. A multi-dimensional LUT is adjusted to minimize spatial uniformity errors at the other pixel locations, thus calibrating device color output spatially.