公开(公告)号：WO2008086498A3

公开(公告)日：2008-09-18

申请号：PCT/US2008050802

申请日：2008-01-10

Applicant: DATALOGIC SCANNING INC ,  OLMSTEAD BRYAN L

Inventor： OLMSTEAD BRYAN L

IPC: G06K7/10

CPC classification number: G06K7/14 ,  G06K7/1413 ,  G06K7/1465

Abstract: Methods and systems are disclosed for processing of 2-D images of optical code symbols (30, 72) having information bearing characteristics in predominantly a single dimension (such as a linear barcode). In a preferred system, pixel summing or averaging is used to generate virtual scan lines (105, 106, 171, 172) for imaging of encoded symbols to improve the signal to noise ratio (SNR) of the resulting virtual scan lines. For example, pixel summing or averaging of an imaging array may be performed in a direction orthogonal to the virtual scan line direction in order to increase the SNR of the virtual scan line signal over what can be achieved with virtual scan lines created using a single image pixel for each virtual scan line pixel. The increased SNR offered by this technique of pixel summing or averaging of an imaging array may allow capture of images with reduced exposure time, enabling capture of images of objects moving at high speed without the necessity of high intensity light sources.

Abstract translation: 公开了用于处理主要具有单维（例如线性条形码）的信息承载特性的光码符号（30,72）的二维图像的方法和系统。 在优选系统中，使用像素求和或平均来产生用于对编码符号成像的虚拟扫描线（105,106,171,172），以提高所得到的虚拟扫描线的信噪比（SNR）。 例如，可以在与虚拟扫描线方向正交的方向上执行成像阵列的像素求和或平均，以便增加虚拟扫描线信号的SNR，超过使用单个图像创建的虚拟扫描线可以实现的信号 每个虚拟扫描线像素的像素。 通过这种成像阵列的像素求和或平均技术提供的增加的SNR可以允许以降低的曝光时间捕获图像，从而能够捕获高速移动的物体的图像，而不需要高强度光源。