公开(公告)号：US20030053183A1

公开(公告)日：2003-03-20

申请号：US09956116

申请日：2001-09-20

Applicant: UMAX DATA SYSTEMS INC.

Inventor： Yin-Chun Huang ,  Wen-Chao Tseng

IPC: G02B026/08

CPC classification number: H04N1/0044 ,  H04N1/3875 ,  H04N2201/0416

Abstract: A method for capturing images useful in a scanning system is provided. The present method comprises performing a preview scan of a picture and then displaying the preview image of the picture on a screen. Selecting a scanning area of the preview image and simultaneously performing a first normal scan of the picture from an initial scanning position relative to the picture. When the scanned area of the first normal scan corresponds to the selected scanning area, the scan image produced by the first normal scan is displayed. Otherwise, a second normal scan of a portion of the picture that corresponds to the selected scanning area is performed to produce a final scan image.

Abstract translation: 提供了一种用于捕获在扫描系统中有用的图像的方法。 本方法包括执行图像的预览扫描，然后在屏幕上显示图像的预览图像。 选择预览图像的扫描区域，并且相对于图像从初始扫描位置同时执行图像的第一正常扫描。 当第一正常扫描的扫描区域对应于所选择的扫描区域时，显示由第一正常扫描产生的扫描图像。 否则，执行对应于所选择的扫描区域的图像的一部分的第二正常扫描以产生最终的扫描图像。

公开(公告)号：US20030081839A1

公开(公告)日：2003-05-01

申请号：US09984902

申请日：2001-10-31

Applicant: UMAX DATA SYSTEMS INC.

Inventor： Wen-Chao Tseng

IPC: G06K009/36 ,  G06K009/46

CPC classification number: H04N19/90 ,  G06T9/004

Abstract: The present invention relates to a method for compressing an image data in real time. At first, the present invention divides an image, which is got after a pre-scanning process, into plural lines. Each line is divide into several blocks, whose sizes are the same. Each block comprises plural pixel values. A pixel value of a block is saved in the buffer completely to become the first datum. The pixel value is usually the minimum pixel value. Then plural differences, which are between the first datum and the plural pixel values of the block, are calculated. One of the plural differences, which are not equal to zero, is saved in the buffer completely to become the second datum. The difference, which is not equal to zero, is usually a minimum difference. Using the second datum to be a divisor and using the plural differences to be dividends will get plural specific values of plural differences to the second datum. When the first number, which is after a dot, of the specific value is greater than a fixed value or equal to the fixed value, it will be carried to the first number, which is in front of the dot and numbers, which are after the dot, are deleted. When the first number, which is after a dot, of the specific value is lower than a fixed value, numbers, which are after the dot, are deleted. This method will make the specific values become integers. At last, the plural specific values are saved in the buffer completely to become the plural third data and the compression procedure of the block is finished. Then the next block is compressed by the same procedure.

Abstract translation: 本发明涉及实时压缩图像数据的方法。 首先，本发明将在预扫描处理之后获得的图像分成多行。 每行分为几个块，其大小相同。 每个块包括多个像素值。 块的像素值被完全保存在缓冲区中，成为第一个数据。 像素值通常是最小像素值。 然后，计算块的第一基准和多个像素值之间的多个差。 不等于零的复数差异之一完全保存在缓冲区中，成为第二个基准。 不等于零的差异通常是最小差异。 使用第二基准作为除数并使用多个差异作为股息将获得与第二基准的多个特定值的多个差异。 当特定值之后的点之后的第一个数字大于固定值或等于固定值时，将被携带到位于点之前的第一个数字，后面是点数和数字 该点被删除。 当特定值之后的点之后的第一个数字低于固定值时，在点之后的数字被删除。 该方法将使特定值成为整数。 最后，将多个特定值完全保存在缓冲器中，成为多个第三数据，并且块的压缩过程结束。 然后通过相同的过程压缩下一个块。