公开(公告)号：US20170277965A1

公开(公告)日：2017-09-28

申请号：US15504889

申请日：2014-08-28

Applicant: Carestream Health, Inc.

Inventor： Qinran Chen ,  Yanbin Lu ,  James R. Milch ,  Victor C. Wong

IPC: G06K9/20 ,  G06T7/60

CPC classification number: G06K9/2027 ,  G06T7/521 ,  G06T7/60 ,  G06T2207/10152 ,  G06T2207/30036

Abstract: A method for mapping a sensor pixel array to an illumination pixel array according to a surface forms a group mapping by assigning each pixel in a on the sensor array to a group that has a group width defined by p adjacent pixels on the illumination pixel array by projecting and recording a first and a second multiple group index image with a first and second pattern of lines. Lines appearing in both first and second pattern are spaced by a first distance that is a first multiple of group width p, and lines that appear only in either pattern are evenly spaced by a second distance that exceeds the first distance. A subset of p multiline images are projected, each projecting a line within each group. Lines in one of the multiline images are correlated with lines from the group index images to generate the group mapping.

公开(公告)号：US09675428B2

公开(公告)日：2017-06-13

申请号：US14326568

申请日：2014-07-09

Applicant: Carestream Health, Inc.

Inventor： Yingqian Wu ,  Yufeng Mo ,  Qinran Chen ,  Victor C. Wong

IPC: A61C9/00 ,  A61B5/00 ,  G01B11/25

CPC classification number: A61C9/006 ,  A61B5/004 ,  A61B5/0088 ,  A61B5/4547 ,  A61B2576/00 ,  G01B11/2518

Abstract: In an exemplary method for obtaining a contour image of a tooth, which can be executed at least in part by a computer, movement of an intra-oral camera can be detected by acquiring a first video image frame that includes the tooth and processing the first video image frame to detect one or more edges of the tooth in the first video image frame and acquiring a second video image frame that includes the tooth and processing the second video image frame to detect the one or more edges of the tooth in the second video image frame. The method can compare corresponding edge locations between the first and second processed video image frames and projects a fringe pattern illumination onto the tooth from the camera, capturing and storing one or more still images of the fringe pattern according to the detected camera movement.

公开(公告)号：US09348034B2

公开(公告)日：2016-05-24

申请号：US14423441

申请日：2013-09-06

Applicant: Carestream Health, Inc.

Inventor： Timothy J. Tredwell ,  Victor C. Wong

IPC: G01T1/20 ,  A61B6/12 ,  G01T1/161 ,  A61B6/00

CPC classification number: G01T1/20 ,  A61B6/12 ,  A61B6/4233 ,  A61B6/542 ,  G01T1/161

Abstract: A wireless X-ray detector for a digital radiography system with remote detection of impinging radiation from the system X-ray source onto a sensor panel having amorphous or crystalline silicon photodiodes or metal insulated semiconductor (MIS) sensors. Certain exemplary embodiments described herein can provide a digital radiography detector including a housing having first and second spaced members and side walls defining a cavity; a radiographic image detector assembly mounted within the cavity for converting a radiographic image to an electronic radiographic image, wherein the detector assembly includes a scintillator screen and a detector imaging array; and a light guiding element positioned proximate the radiographic image detector assembly to detect a start of exposure, a termination of the exposure, dose for the exposure or rate of dose for the exposure using light generated by the scintillator screen.

Abstract translation: 一种用于数字射线照相系统的无线X射线检测器，其具有从系统X射线源到具有非晶或晶体硅光电二极管或金属绝缘半导体（MIS）传感器的传感器面板的入射辐射的远程检测。 本文所描述的某些示例性实施例可以提供数字放射线检测器，其包括具有限定腔的第一和第二间隔构件和侧壁的壳体; 安装在腔内的放射线照相图像检测器组件，用于将射线照相图像转换成电子放射照相图像，其中检测器组件包括闪烁体屏幕和检测器成像阵列; 以及位于放射线照相图像检测器组件附近的导光元件，以使用由闪烁体屏幕产生的光来检测曝光的开始，曝光的终止，曝光的剂量或曝光的剂量。

公开(公告)号：US09020228B2

公开(公告)日：2015-04-28

申请号：US14064285

申请日：2013-10-28

Applicant: Carestream Health, Inc.

Inventor： Jiayong Yan ,  Wei Wang ,  Liangliang Pan ,  Victor C. Wong

IPC: G06K9/00 ,  G06K9/34 ,  G06K9/20 ,  G06K9/36 ,  A61C1/00 ,  A62B1/04 ,  G06T7/00

CPC classification number: G06T7/0081 ,  G06T7/11 ,  G06T7/136 ,  G06T7/174 ,  G06T2207/10064 ,  G06T2207/30036

Abstract: A method for identifying tooth regions. The method includes generating a first threshold image from a first tooth image by selecting intensity data values higher than a first predetermined threshold value c1; generating a second threshold image from a second tooth image by selecting intensity data values higher than a second predetermined threshold value c2; generating a preliminary tooth regions image that defines at least a first tooth region from the intersection of the first and second threshold images; generating a reference binary image from the first image by selecting intensity data values higher than a third predetermined threshold value c3, wherein threshold value c3 exceeds c1; and generating a refined tooth regions image from at least the first tooth region in the preliminary tooth regions image. The first tooth region is connected to objects in the reference binary image.

Abstract translation: 一种识别牙齿区域的方法。 该方法包括通过选择高于第一预定阈值c1的强度数据值从第一齿图像生成第一阈值图像; 通过选择高于第二预定阈值c2的强度数据值从第二齿图像生成第二阈值图像; 产生从所述第一和第二阈值图像的交点确定至少第一齿区域的预备齿区域图像; 通过选择高于第三预定阈值c3的强度数据值从第一图像生成参考二进制图像，其中阈值c3超过c1; 以及从所述预备齿区域图像中的至少所述第一齿区域生成精细的齿区域图像。 第一齿区域连接到参考二进制图像中的对象。

公开(公告)号：US08768025B2

公开(公告)日：2014-07-01

申请号：US14040776

申请日：2013-09-30

Applicant: Carestream Health, Inc.

Inventor： Victor C. Wong ,  James R. Milch ,  Lawrence A. Ray ,  Peter D. Burns

IPC: G06K9/00

CPC classification number: A61B1/24 ,  A61B1/00006 ,  A61B1/00009 ,  A61B1/04 ,  A61B1/0638 ,  G01J3/46 ,  G01J3/462 ,  G01J3/465 ,  G01J3/50 ,  G01J3/501 ,  G01J3/508 ,  G01J3/524

Abstract: A method and apparatus for generating a color mapping for a dental object. The method includes generating a transformation matrix according to a set of spectral reflectance data for a statistically valid sampling of teeth. Illumination is directed toward the dental object over at least a first, a second, and a third wavelength band, one wavelength band at a time. For each of a plurality of pixels in an imaging array, an image data value is obtained, corresponding to each of the at least first, second, and third wavelength bands. The transformation matrix is applied to form the color mapping by generating a set of visual color values for each of the plurality of pixels according to the obtained image data values and according to image data values obtained from a reference object at the at least first, second, and third wavelength bands. The color mapping can be stored in an electronic memory.

Abstract translation: 一种用于产生牙科物体的颜色映射的方法和装置。 该方法包括根据用于统计学上有效的牙齿取样的一组光谱反射率数据产生变换矩阵。 通过至少第一，第二和第三波长带，一次一个波长带照射朝向牙科物体。 对于成像阵列中的多个像素中的每一个，获得对应于至少第一，第二和第三波长带中的每一个的图像数据值。 应用变换矩阵以通过根据所获得的图像数据值生成一组视觉颜色值以形成颜色映射，并且根据从至少第一，第二的参考对象获得的图像数据值 和第三波长带。 颜色映射可以存储在电子存储器中。