会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Adaptive threshold circuit for image processing
    • 用于图像处理的自适应阈值电路
    • US4850029A
    • 1989-07-18
    • US754685
    • 1985-07-15
    • Alan L. MoyerVincent J. Messina
    • Alan L. MoyerVincent J. Messina
    • H04N1/40G06T5/00G06T5/20H04N1/403
    • G06T7/0083G06T5/20H04N1/403G06T2207/10008G06T2207/20012G06T2207/30176
    • An adaptive threshold circuit is disclosed wherein reflectance values are measure D in each of a number of scan lines on a document on which an image is scanned, digitized at a multiplicity of points and processed to create a processed digitized image signal that is stored or transmitted and then used to recreate the document accurately without objectional light and dark variations over the recreated documents and without being affected by the background color of the original document, variations in illuminating and the black/white makeup of the image. The unprocessed digitized data is first used to calculate a mean value of the digitized reflectance values for each of a number of columns on the document. The same data is then used to calculate a mean-above-mean value for the same columns. Each digitized reflectance value is compared to the mean value and only when it exceeds the mean value is the mean-above-mean value updated. A threshold value is then calculated for each column using the updated mean above mean values for a particular column and for the two contiguous columns. At the same time the most recent threshold value for each column is compared to each unprocessed digitized reflectance value taken in the associated column and values above the threshold value are assigned a first binary value indicating the sample is white and values equal to or below are assigned the opposite binary value indicating the sample is black.
    • 公开了一种自适应阈值电路,其中反射率值是在其上扫描图像的文档上的多条扫描线中的每一条中测量D,并以多个点数字化并被处理以创建被存储或发送的经处理的数字化图像信号 然后用于准确地重新创建文档,而不会在重新创建的文档上产生不必要的明暗变化,并且不受原始文档的背景颜色,照明的变化和图像的黑/白化妆的影响。 未处理的数字化数据首先用于计算文档上的多个列中的每一个的数字化反射率值的平均值。 然后使用相同的数据来计算相同列的平均值。 将每个数字化反射率值与平均值进行比较,只有当超过平均值时才更新平均值。 然后使用更新的平均值高于特定列的平均值和两个连续列计算每列的阈值。 同时,将每列的最新阈值与在相关联的列中获取的每个未处理的数字化反射值进行比较,并且为阈值以上的值分配指示样本是白色的第一二进制值,并且分配等于或小于等于的值 指示样品的相反二进制值为黑色。
    • 7. 发明授权
    • Detection of gaps in scanned images
    • 检测扫描图像中的间隙
    • US5153748A
    • 1992-10-06
    • US413856
    • 1989-09-28
    • Alan L. Moyer
    • Alan L. Moyer
    • G06T7/00
    • G06T7/001G06T2207/10008G06T2207/30144
    • A technique for detecting erroneous pixels in image data output by a scanner. A first aspect of the technique is to test for the existence of an erroneous gap by comparing the values of selected pixels to one of several predetermined patterns. A potential gap is identified wherever a center pixel of a background value is located between two pixels of a foreground value. A second aspect of the technique tests for the existence of an erroneous gap by examining the values of pixels surrounding the potential gap more completely. In particular, the relative sizes of two line features on either side of the potential gap are determined by tracing the feature's perimeters to locate terminus pixels. If the terminus pixels are farther apart than a predetermined distance, it is concluded that a gap exists. The technique can be easily adapted for rapid execution on both bitmap and run encoded image data.
    • 一种用于检测由扫描器输出的图像数据中的错误像素的技术。 该技术的第一方面是通过将所选择的像素的值与若干预定图案之一进行比较来测试是否存在错误的间隙。 任何一个背景值的中心像素位于前景值的两个像素之间的潜在差距。 该技术的第二方面通过更完全地检查围绕电势间隙的像素的值来测试存在错误的间隙。 特别地,通过跟踪特征的周长来定位终点像素来确定潜在间隙两侧的两个线特征的相对尺寸。 如果终点像素比预定距离更远,则可以认为存在间隙。 该技术可以轻松适应于位图和运行编码图像数据的快速执行。