公开(公告)号：US20070203905A1

公开(公告)日：2007-08-30

申请号：US11797062

申请日：2007-04-30

Applicant: Lalit Mestha ,  Sohail Dianat ,  Francesca Polo ,  Gary Skinner

Inventor： Lalit Mestha ,  Sohail Dianat ,  Francesca Polo ,  Gary Skinner

IPC: G06F17/30

CPC classification number: G01J3/28 ,  G01J3/46 ,  G01J3/462 ,  G01J3/50 ,  G01J3/501 ,  G01J3/524 ,  G01J2003/466 ,  G06F17/30289 ,  H04N1/6033 ,  Y10S707/99937

Abstract: To determine spectra, integrated multiple illuminant measurements from a non-fully illuminant populated color sensor may be converted into a fully populated spectral curve using a reference database. The reference database is partitioned into a plurality of clusters, and an appropriate centroid is determined for each cluster by, for example, vector quantization. Training samples that form the reference database may be assigned to the clusters by comparing the Euclidean distance between the centroids and the sample under consideration, and assigning each sample to the cluster having the centroid with the shortest Euclidean distance. When all training samples have been assigned, the resulting structure is stored as the reference database. When reconstructing the spectra for new measurements from the sensor, the Euclidean distances between actual color samples under measurement and each cluster centroid are measured. The spectra are then reconstructed using only the training samples from the cluster corresponding to the shortest Euclidean distance, resulting in improved speed and accuracy.

Abstract translation: 为了确定光谱，可以使用参考数据库将来自非完全光源的填充颜色传感器的集成多个光源测量值转换为完全填充的光谱曲线。 参考数据库被划分成多个簇，并且通过例如向量量化为每个簇确定适当的质心。 形成参考数据库的训练样本可以通过比较质心和所考虑的样本之间的欧氏距离，并将每个样本分配给具有最短欧几里德距离的质心的群集来分配给群集。 当所有训练样本都被分配后，结果存储为参考数据库。 当从传感器重建新测量的光谱时，测量测量下的实际颜色样本与每个聚类质心之间的欧氏距离。 然后使用仅对应于最短欧几里得距离的簇的训练样本重建光谱，从而提高速度和精度。

公开(公告)号：US20070153243A1

公开(公告)日：2007-07-05

申请号：US11319395

申请日：2005-12-29

Applicant: Lalit Mestha ,  Peter Gulvin ,  Pinyen Lin ,  Yao Wang

Inventor： Lalit Mestha ,  Peter Gulvin ,  Pinyen Lin ,  Yao Wang

IPC: G03B21/00

CPC classification number: G02B26/001 ,  G03B21/005

Abstract: An apparatus may include an illuminator, a controller, a display panel, a modulator, and a plurality of Fabry-Perot cavities. The plurality of Fabry-Perot cavities generated an image from light provided by the illuminator, each pixel of the image corresponding to a respective one of the plurality of Fabry-Perot cavities. The controller controls the modulator to provide image modulation data to the plurality of Fabry-Perot cavities for generating the image, the modulator providing color information to a first cavity of the plurality of Fabry-Perot cavities for setting a size of the first cavity to correspond to a color of a first pixel of the image, the modulator providing gray level information to the first cavity for time-division multiplexing to correspond to a gray level of the first pixel. The display panel display pixels of the generated image based on colors and gray levels of each pixel of the generated image.

Abstract translation: 装置可以包括照明器，控制器，显示面板，调制器和多个法布里 - 珀罗腔。 多个法布里 - 珀罗腔由照明器提供的光产生图像，图像的每个像素对应于多个法布里 - 珀罗腔中的相应一个。 所述控制器控制所述调制器以向所述多个法布里 - 珀罗腔提供图像调制数据以产生图像，所述调制器向所述多个法布里 - 珀罗腔中的第一空腔提供颜色信息，用于将所述第一腔的尺寸设定为对应 对于图像的第一像素的颜色，调制器向第一腔提供灰度信息用于时分复用以对应于第一像素的灰度级。 显示面板基于生成图像的每个像素的颜色和灰度等级来显示生成的图像的像素。

公开(公告)号：US20060152718A1

公开(公告)日：2006-07-13

申请号：US11033882

申请日：2005-01-13

Applicant: Lalit Mestha ,  Fred Hubble ,  Kenneth Mihalyov ,  Tonya Love ,  Gary Skinner

Inventor： Lalit Mestha ,  Fred Hubble ,  Kenneth Mihalyov ,  Tonya Love ,  Gary Skinner

IPC: G01J3/00

CPC classification number: G01N21/25 ,  G01J3/02 ,  G01J3/0264 ,  G01J3/10 ,  G01J3/4406

Abstract: To determine the spectra of objects that have different degrees of fluorescence, a plurality of reference databases are provided, each reference database being suited to a different degree of fluorescence. A most appropriate one of the reference databases is selected based on a predicted degree of fluorescence of an object for which a reflectance spectrum is to be determined. The prediction of the degree of fluorescence may be based on user input, or may be predicted by using a priori information, such as a priori knowledge of media types.

Abstract translation: 为了确定具有不同程度的荧光的物体的光谱，提供了多个参考数据库，每个参考数据库适合于不同程度的荧光。 基于要确定反射光谱的对象的预测荧光程度来选择最合适的参考数据库之一。 荧光度的预测可以基于用户输入，或者可以通过使用诸如媒体类型的先验知识的先验信息来预测。

公开(公告)号：US20050240366A1

公开(公告)日：2005-10-27

申请号：US10833231

申请日：2004-04-27

Applicant: Lalit Mestha ,  Jagdish Tandon ,  Steven Bolte

Inventor： Lalit Mestha ,  Jagdish Tandon ,  Steven Bolte

IPC: G01J3/10 ,  G01J3/50 ,  G06F19/00

CPC classification number: G01J3/50 ,  G01J3/501 ,  G01N21/255 ,  G01N2201/0627

Abstract: A full width array spectrophotometer for full width scanning color analysis of color test targets, with one or two substantially linear elongated arrays of closely spaced multiple LED illumination sources of plural different color emissions in a multiply repeated pattern of at least three or four different colors transversely spanning a printer paper path and sequentially illuminated to illuminate a transverse band across a printed sheet moving in the paper path, and a corresponding elongated low cost light imaging bar comprising a parallel and correspondingly elongated array of multiple closely spaced different color sensitive (three or four rows of color-filtered) photodetectors, which imaging bar is positioned to detect and analyze light reflected from the transverse sequentially illuminated band.

Abstract translation: 全宽阵列分光光度计，用于彩色测试目标的全宽度扫描颜色分析，具有一个或两个基本上线性的细长阵列，其具有多个不同颜色的多个LED照明源，具有至少三个或四个不同颜色的多重重复图案横向 跨越打印机纸路径并顺序照亮以照射在纸张路径中移动的印刷纸张上的横向带，以及相应的细长的低成本的光成像条，其包括多个紧密间隔的不同颜色敏感（三或四个）的平行和相应细长的阵列 行彩色滤波的）光电检测器，其成像条被定位成检测和分析从横向顺序照射的带反射的光。

公开(公告)号：US20070153288A1

公开(公告)日：2007-07-05

申请号：US11319389

申请日：2005-12-29

Applicant: Yao Rong Wang ,  Peter Gulvin ,  Lalit Mestha ,  Pinyen Lin

Inventor： Yao Rong Wang ,  Peter Gulvin ,  Lalit Mestha ,  Pinyen Lin

IPC: G01B9/02 ,  G01J3/45

CPC classification number: G02B26/001 ,  G01J3/02 ,  G01J3/027 ,  G01J3/26 ,  G01J3/2823

Abstract: A optical apparatus may include a plurality of Fabry-Perot cavities and a controller. The plurality of Fabry-Perot cavities receives an incoming image. The controller controls a group of adjacent Fabry-Perot cavities of the plurality of Fabry-Perot cavities to sample spectral information from a pixel of the incoming image. The group may be designated to the pixel. Sizes of the cavities within the group may differ from one another. The sizes of the cavities within the group may be fixed during the spectral information synthesis operation.

Abstract translation: 光学装置可以包括多个法布里 - 珀罗腔和控制器。 多个法布里 - 珀罗腔接收输入图像。 控制器控制多个法布里 - 珀罗腔中的一组相邻的法布里 - 珀罗腔，以从入射图像的像素中采样光谱信息。 可以将该组指定给该像素。 组内空腔的尺寸可能彼此不同。 在光谱信息合成操作期间，组内的空腔的尺寸可以是固定的。

公开(公告)号：US20070153287A1

公开(公告)日：2007-07-05

申请号：US11319276

申请日：2005-12-29

Applicant: Pinyen Lin ,  Lalit Mestha ,  Peter Gulvin ,  Yao Wang

Inventor： Pinyen Lin ,  Lalit Mestha ,  Peter Gulvin ,  Yao Wang

IPC: G01B9/02 ,  G01J3/45

CPC classification number: G02B26/001 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/027 ,  G01J3/26

Abstract: A spectral filter includes a two-dimensional array of Fabry-Perot cavity structures, a controller, and a sampling circuit used to switch the Fabry-Perot cavity. The filter receives an incoming image, the sampling circuit switches the cavity to generate a filter image, and the filtered image is detected by the photodetectors to convert a filtered image into digital data. The controller coordinates all the image captures functions of the spectral filter.

Abstract translation: 光谱滤波器包括法布里 - 珀罗腔结构的二维阵列，控制器和用于切换法布里 - 珀罗腔的采样电路。 滤波器接收输入图像，采样电路切换空腔以产生滤波图像，并且由光电检测器检测滤波图像以将滤波图像转换为数字数据。 控制器协调光谱滤波器的所有图像捕获功能。

公开(公告)号：US20070139734A1

公开(公告)日：2007-06-21

申请号：US11314104

申请日：2005-12-21

Applicant: Zhigang Fan ,  Lalit Mestha ,  Yao Wang ,  Shen-ge Wang

Inventor： Zhigang Fan ,  Lalit Mestha ,  Yao Wang ,  Shen-ge Wang

IPC: H04N1/46

CPC classification number: G06F15/00 ,  H04N1/6033 ,  H04N1/6036 ,  H04N1/6047

Abstract: Disclosed are a system and method are directed to efficient image based color calibration and improving color consistency performance, and more particularly to the use of continuous or dynamic calibration performed during printing and enabling adjustment on a page by page basis.

Abstract translation: 公开了一种系统和方法涉及基于图像的有效色彩校准和改进色彩一致性性能，更具体地说，涉及在打印期间执行的连续或动态校准的使用以及逐页的启用调整。

公开(公告)号：US20070139733A1

公开(公告)日：2007-06-21

申请号：US11313018

申请日：2005-12-20

Applicant: Howard Mizes ,  Robert Loce ,  Lalit Mestha ,  Peter Paul

Inventor： Howard Mizes ,  Robert Loce ,  Lalit Mestha ,  Peter Paul

IPC: H04N1/46

CPC classification number: H04N1/6033 ,  H04N1/4015 ,  H04N1/6041

Abstract: Multiple input patches are received on an output media, which patches are characterized by print density representing a document processing system's response to different input grayscale values over a potential response space. Values associated with the print density of each input grayscale value are measured. Reference Engine Response Curves are determined from the measured print density values and input gray scale values. A variance data representative of a difference between each measured print density value and a respective reference Engine Response Curve is determined. The variance data is transformed into individual components. Based at least on one selected individual component, a set of calibration compensating Tone Reproduction Curves is determined. The determined calibration compensating Tone Reproduction Curves are applied to input grayscale values.

Abstract translation: 在输出介质上接收多个输入补丁，这些补丁的特征在于打印密度，表示文档处理系统对潜在响应空间上的不同输入灰度值的响应。 测量与每个输入灰度值的打印浓度相关联的值。 参考引擎响应曲线由测量的打印浓度值和输入灰度值确定。 确定表示每个测量的打印浓度值和各个参考引擎响应曲线之间的差异的方差数据。 方差数据被转换为单个组件。 至少基于一个所选择的单独组件，确定一组校准补偿音再现曲线。 确定的校准补偿色调再现曲线被应用于输入灰度值。

公开(公告)号：US20070076273A1

公开(公告)日：2007-04-05

申请号：US11242423

申请日：2005-09-30

Applicant: R. Viturro ,  Lalit Mestha ,  Joseph Hancock ,  Tonya Love

Inventor： R. Viturro ,  Lalit Mestha ,  Joseph Hancock ,  Tonya Love

IPC: H04N1/46

CPC classification number: H04N1/4078

Abstract: 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.

Abstract translation: 一种自动灰度平衡控制系统，用于在再现装置中产生用于所有原色的TRC，并且通过印刷每个间距的目标贴片，测量输出颜色，并且自动重新调整色调再现曲线，直到满意的等级 与理论预期输出相比，获得了精度。 该系统产生基于沥青的灰色平衡TRC，每个音调经常更新，具有不同音高的不同TRC，以确保从音调到音调的输出以及给定音调从一页到另一页的输出的一致性。

公开(公告)号：US20060244968A1

公开(公告)日：2006-11-02

申请号：US11125897

申请日：2005-05-02

Applicant: Lalit Mestha ,  Raja Bala ,  Reiner Eschbach

Inventor： Lalit Mestha ,  Raja Bala ,  Reiner Eschbach

IPC: G01J3/46

CPC classification number: G06K15/02 ,  G03G15/5029 ,  G03G2215/00751

Abstract: Identifying the substrate type of a target substrate before patterning by a marking engine produces an opportunity to adjust the marking engine. The adjustments can enable the marking engine to produce higher quality work. The target substrate's substrate type can be automatically identified by obtaining its characteristics and submitting them to a classifier. A spectrophotometer can measure a substrates reflectance spectrum, which is a good characteristic for use in classifying. Classifiers can be based on known distance or correlation measures.

Abstract translation: 在通过标记引擎构图之前识别目标衬底的衬底类型产生调整标记引擎的机会。 调整可以使打标机产生更高质量的工作。 目标基板的基板类型可以通过获得其特性并将其提交给分类器来自动识别。 分光光度计可以测量底物反射光谱，这是分类中使用的良好特性。 分类器可以基于已知距离或相关性度量。