公开(公告)号：EP1308888A1

公开(公告)日：2003-05-07

申请号：EP01830685.2

申请日：2001-11-06

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Limited

Inventor： Guarnera, Mirko ,  Mancuso, Massimo ,  Hurwitz, Jonathan ,  Smith, Stewart ,  Findlater, Keith

IPC: G06T3/40

CPC classification number: G06T3/4015 ,  H04N9/045

Abstract: A method of processing digital images in devices for acquiring both individual images and image sequences, comprising the step of acquiring images in CFA (colour filter array) format and the step of reducing the resolution of the images acquired. In order to reduce computing time and energy consumption, the resolution-reduction step processes the images directly in CFA format.

Abstract translation: 一种在用于获取单个图像和图像序列的装置中处理数字图像的方法，包括以CFA（滤色器阵列）格式获取图像的步骤以及降低所获取图像的分辨率的步骤。 为了减少计算时间和能量消耗，分辨率降低步骤以CFA格式直接处理图像。

公开(公告)号：EP1335587A1

公开(公告)日：2003-08-13

申请号：EP02425061.5

申请日：2002-02-08

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Limited

Inventor： Findlater, Keith ,  Henderson, Robert ,  Smith, Stewart ,  Hurwitz, Jonathan ,  Guarnera, Mirko

IPC: H04N3/15

CPC classification number: H04N5/374 ,  H04N5/3456 ,  H04N5/3458 ,  H04N9/045

Abstract: A digital camera for capturing and processing images of different resolutions is described together with a method for down-scaling a digital image. The method comprises the steps of forming an image of a real scene on an image sensor (4) comprising a plurality of pixels arranged in a matrix, addressing and reading pixels in the matrix to obtain analogue quantities related with the pixels luminance values, converting (5) the analogue quantities from the pixels matrix into digital values and processing (6-13) the digital values to obtain a data file representing the image of the real scene. To reduce computation time and power consumption the step of addressing and reading pixels includes the steps of selecting a group of pixels from the matrix, storing the analogue quantities related with the pixels of the selected group of pixels into analogue storing means (14) and averaging the stored analogue quantities to obtain an analogue quantity corresponding to an average pixel luminance value.

Abstract translation: 用于捕获和处理不同分辨率的图像的数字照相机与用于比例缩小的数字图像的方法一起描述。 该方法包括在（图像传感器（4），包括以矩阵排列的像素的复数，寻址和在基体中，以获得与所述像素的亮度值相关的类似物的量读出诸像素形成真实场景的图像的步骤，转换 5）来自像素的模拟量矩阵成数字值和处理（6-13）的数字值，以获得表示所述真实场景的图像的数据文件。 为了减少计算时间和功耗寻址和读出的像素的步骤包括选择一组像素的从矩阵，存储与像素的选择的组的像素的相关成模拟存储装置（14）和平均模拟量的步骤 所存储的模拟量，以获得对模拟量对应于平均像素亮度值。

公开(公告)号：EP1324592A1

公开(公告)日：2003-07-02

申请号：EP01310582.0

申请日：2001-12-19

Applicant: STMicroelectronics Limited

Inventor： Findlater, Keith ,  Hurwitz, Jonathan Ephriam David

IPC: H04N5/217 ,  H04N3/15

CPC classification number: H04N5/363 ,  H04N5/3575 ,  H04N5/374 ,  H04N5/378

Abstract: A solid state image sensor has a pixel array (80) of active pixel type using three transistors plus a photodiode per pixel. Pixel reset values are read out one row at a time and stored in a frame store (83). Pixel signal values are read out a row at a time. The stored reset values are subtracted, for example by a read/write/modify circuit (84) to remove kTC noise. The readout of reset and signal values for are interleaved, and the offset between read and reset for each row is selected to control frame exposure.

Abstract translation: 固态图像传感器具有使用三个晶体管和每像素的光电二极管的有源像素类型的像素阵列（80）。 像素复位值一次读出一行并存储在帧存储器（83）中。 像素信号值一次读出一行。 存储的复位值例如通过读/写/修改电路（84）被减去以去除kTC噪声。 复位和信号值的读出被交错，并且选择每行的读取和复位之间的偏移量以控制帧曝光。

公开(公告)号：EP1475957A1

公开(公告)日：2004-11-10

申请号：EP03252872.1

申请日：2003-05-08

Applicant: STMicroelectronics Limited

Inventor： Findlater, Keith ,  Bosco, Angelo

IPC: H04N5/217 ,  H04N3/15

CPC classification number: H04N5/3658 ,  H04N5/365

Abstract: An image sensor array 12 of active pixel elements 17 arranged in rows and columns, where each column has an output circuit 18 for reading out pixel image signals comprising a pair of sample capacitors 34, 36, a switching means 38, 40 operable in conjunction with pixel switches 24, 26, 28 to apply pixel voltages to the sample capacitors 34, 36, and one or more optically masked pixels 19 such that output image signals obtained from said optically masked pixels 19 represent substantially only the column FPN includes image processing means 14 for recording the column FPN for each column from said optically masked pixels 19; recording the image signal from said sensor array of active pixels 17; and subtracting the column FPN column-wise from the image signal.

Abstract translation: 布置成行和列的有源像素元件17的图像传感器阵列12，其中每列具有用于读出像素图像信号的输出电路18，该输出电路18包括一对采样电容器34,36，开关装置38,40以及 像素开关24,26,28以将像素电压施加到采样电容器34,36和一个或多个光学屏蔽像素19，使得从所述光学屏蔽像素19获得的输出图像信号基本上仅表示列FPN包括图像处理装置14 用于从所述光学掩蔽像素19记录每列的列FPN; 从有源像素17的传感器阵列记录图像信号; 并从图像信号中逐列减去列FPN。