公开(公告)号：US20030223649A1

公开(公告)日：2003-12-04

申请号：US10360516

申请日：2003-02-07

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

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

IPC: G06K009/32

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

Abstract: A digital camera for capturing and processing images of different resolutions and a corresponding method for down-scaling a digital image are provided. The method includes forming an image of a real scene on an image sensor that is made up of a plurality of pixels arranged in a matrix. The method further includes addressing and reading pixels in the matrix to obtain analog quantities related to the pixels luminance values, converting the analog quantities from the pixels matrix into digital values, and processing the digital values to obtain a data file representing the image of the real scene. To reduce computation time and power consumption, the addressing and reading of the pixels includes selecting a group of pixels from the matrix, and storing the analog quantities related to the pixels of the selected group of pixels into an analog storing circuit. The stored analog quantities are averaged to obtain an analog quantity corresponding to an average pixel luminance value.

Abstract translation: 提供了用于捕获和处理不同分辨率的图像的数字照相机和用于缩小数字图像的相应方法。 该方法包括在由矩阵排列的多个像素构成的图像传感器上形成真实场景的图像。 该方法还包括寻址和读取矩阵中的像素以获得与像素亮度值相关的模拟量，将来自像素矩阵的模拟量转换为数字值，并处理数字值以获得表示真实图像的数据文件 现场。 为了减少计算时间和功耗，像素的寻址和读取包括从矩阵中选择一组像素，并将与所选择的像素组的像素相关的模拟量存储到模拟存储电路中。 对存储的模拟量进行平均以获得对应于平均像素亮度值的模拟量。