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公开(公告)号:US06463481B1
公开(公告)日:2002-10-08
申请号:US09452713
申请日:1999-12-02
IPC分类号: G06F300
CPC分类号: H04N1/32443 , H04N1/32358 , H04N1/32448 , H04N1/41 , H04N2201/3288 , H04N2201/329 , H04N2201/33357 , H04N2201/33378
摘要: The present invention generally relates to a digital scanner for scanning images. More specifically, the present invention is directed to a method and apparatus for quickly processing and storing digital data in memory.
摘要翻译: 本发明一般涉及用于扫描图像的数字扫描仪。 更具体地,本发明涉及一种用于在存储器中快速处理和存储数字数据的方法和装置。
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公开(公告)号:US06621940B2
公开(公告)日:2003-09-16
申请号:US09329297
申请日:1999-06-10
IPC分类号: G06K932
CPC分类号: G06T3/606
摘要: An image is rotated in opponent color space, such as L*a*b* or Y CB CR color space, by inputting the opponent color space image data, subsampling the opponent color space image data, and addressing the subsampled opponent color space image data into an output configuration corresponding to a specified rotation angle. For 90° and 270° rotation, the opponent color space image data is scaled before being addressed. This eliminates distortion of the rotated image, while allowing real-time rotation of the image in hardware.
摘要翻译: 通过输入对方的彩色空间图像数据,对对方的彩色空间图像数据进行二次采样,以及寻址二次采样的对象色彩空间图像数据,使图像在对方的颜色空间(例如L * a * b *或Y CB CR颜色空间)中旋转 变成对应于指定的旋转角度的输出配置。 对于90°和270°旋转,对方的颜色空间图像数据在被寻址之前被缩放。 这消除了旋转图像的失真,同时允许图像在硬件中实时旋转。
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13.
公开(公告)号:US06401143B1
公开(公告)日:2002-06-04
申请号:US09452688
申请日:1999-12-02
IPC分类号: G06F1328
CPC分类号: G06F13/28
摘要: The present invention generally relates to a loopback direct memory access control system for a digital scanner for processing images. More specifically, the present invention is directed to a method and apparatus for quickly reading digital data from memory, processing the digital data and writing the processed digital data to memory.
摘要翻译: 本发明一般涉及一种用于数字扫描仪处理图像的环回直接存储器访问控制系统。 更具体地说,本发明涉及一种用于从存储器快速读取数字数据,处理数字数据并将经处理的数字数据写入存储器的方法和装置。
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