-
公开(公告)号：EP0149120A3
公开(公告)日：1988-01-13
申请号：EP84115007
申请日：1984-12-11
IPC分类号： G06F15/62
CPC分类号： G06T3/4023
摘要： A method for expanding a binary image includes the steps of: storing the image in bit sequence; inserting for each string of 5 bits along a first axis one or more expansion bits, to convert each said string of 5 bits to a string of 6 bits; assigning a value to each expansion bit generated by the above step; inserting one or more rows of expansion bits for each 5 rows of bits along a second axls of the image to convert each 5 rows of bits to 6 rows of bits along the second axis of the image; assigning a value to each expansion bit generated by the above steps; storing the enlarged image generated by the above steps.
-
公开(公告)号：EP0149119A3
公开(公告)日：1987-12-02
申请号：EP84115005
申请日：1984-12-11
IPC分类号： G06F15/62
CPC分类号： G06T3/602
摘要： Method for rotating an image by 90 degrees includes the steps of: storing the image in a raster format arranged in r rows by c columns, image information in each row being stored in a number of bytes, each byte having b bits, there being c/b bytes in each row of the raster format; moving a block of the image into a temporary storage, there being n rows by m columns in the block; separating each image block into groups of bytes of rotatable size; determining for each group if all bits are the same value; rotating each group that does not have all bits the same value; storing each rotated group in an output area of the raster storage; repeating the above steps for all remaining blocks of the image.
-
13.发明公开A method for converting an image from a run end or run length representation to a bit map 失效一种将图像从运行结束或运行长度表示转换为位图的方法
公开(公告)号：EP0149121A3
公开(公告)日：1987-07-29
申请号：EP84115008
申请日：1984-12-11
IPC分类号： H04N01/419
摘要： A method for converting an image from a run represen-; tation to a bit map, includes the steps of: storing a plurality of run representations of an image in a buffer; initializing a line of data; converting, by table lookup, each run representation, in said line, to a picture element representation, storing said picture element representation of said line; repeating the steps of initializing, converting and storing for remaining run representations until said image has been converted to a bit map representation.
-
公开(公告)号：EP0142767A2
公开(公告)日：1985-05-29
申请号：EP84113330.9
申请日：1984-11-06
CPC分类号： G06T3/403 , H04N1/40068 , H04N1/41
摘要： Data compression, resolution and coding efficiency of graphic text or line image data is achieved by eliminating transitions between gray levels at edges in an image, converting all gray levels to a common value to achieve a 3 level representation of the image, and reversibly converting the 3 level representation to a bilevel double resolution representation by increasing the data sampling rate and therefore allowing the use of two level data compression techniques. A high resoluton display or printed output may be obtained from the bilevel multiresolution representation.
摘要翻译： 图形文字或行图像数据的数据压缩，分辨率和编码效率通过消除图像边缘灰度级之间的转换，将所有灰度级转换为公共值来实现图像的3级表示，并可逆地转换 通过增加数据采样率，从而允许使用两级数据压缩技术，将3级表示为双层分辨率表示。 可以从双层多分辨率表示中获得高分辨率显示或打印输出，
-
-
16.发明授权An improved method for converting a bit map of an image to a run lenght or run end representation 失效一种用于将图像的位图转换为运行长度或运行结束表示的改进方法
公开(公告)号：EP0167023B1
公开(公告)日：1991-05-02
申请号：EP85107131.6
申请日：1985-06-11
发明人： Anderson, Karen Louise , Mitchell, Joan La Verne , Pennebaker, William Boone , Goertzel, Gerald
IPC分类号： H04N1/419
-
17.发明公开An improved method for converting a bit map of an image to a run lenght or run end representation 失效一种用于将图像的位图转换为运行长度或运行结束表示的改进方法
公开(公告)号：EP0167023A3
公开(公告)日：1988-08-10
申请号：EP85107131
申请日：1985-06-11
发明人： Anderson, Karen Louise , Mitchell, Joan La Verne , Pennebaker, William Boone , Goertzel, Gerald
IPC分类号： H04N01/419
摘要： A method for converting an image from a bit map to a run end or run length representation includes the steps of : storing the image as a bit map representation; accessing for each byte in an image by a look-up table a selected routine, corresponding to such byte, from a number of routines for converting bit strings to run representations, wherein the look-up table accessed is selected in accordance with a color value of a preceding pixel binary bit; and executing the selected routine on the current byte to convert the bit string to a run representation; storing in a run representation buffer, as a count value, each run representation; repeating the above steps of accessing and executing for each byte and storing for each run of continuous color to the end of the image.
-
公开(公告)号：EP0142767A3
公开(公告)日：1987-10-07
申请号：EP84113330
申请日：1984-11-06
CPC分类号： G06T3/403 , H04N1/40068 , H04N1/41
摘要： Data compression, resolution and coding efficiency of graphic text or line image data is achieved by eliminating transitions between gray levels at edges in an image, converting all gray levels to a common value to achieve a 3 level representation of the image, and reversibly converting the 3 level representation to a bilevel double resolution representation by increasing the data sampling rate and therefore allowing the use of two level data compression techniques. A high resoluton display or printed output may be obtained from the bilevel multiresolution representation.
-
19.发明公开Method for encoding and decoding a digital image 失效Verfahren zum Kodieren und Dekodieren eines digitalen Bildes。
公开(公告)号：EP0149124A2
公开(公告)日：1985-07-24
申请号：EP84115016.2
申请日：1984-12-11
IPC分类号： H04N1/417
CPC分类号： H04N1/4175 , G06T9/005
摘要： A method for encoding and decoding digital image data, includes the steps of testing the data for a vertical relationship between adjacent lines of the image, generating directly a reference code word representative of the vertical relationship for each successful test, generating by table lookup a run code word for a stream of data bits of common value for each unsuccessful test, wherein a data element representing a number of bits in a code word is stored at a predetermined offset from a table entry for the code word, merging the vertical reference code words and the run code words generated by the above steps to form an encoded data stream, testmg an encoded data stream for a reference code, decoding directly the vertical relationship from the reference code for each successful test: decoding by table lookup a run of bits of common value by serial examination of said encoded data stream for each unsuccessful test and storing data decoded by the above steps in a predetermined relationship
摘要翻译： 一种用于对数字图像数据进行编码和解码的方法，包括以下步骤：对图像的相邻行之间的垂直关系进行数据测试，直接生成代表每个成功测试的垂直关系的参考代码字，通过表查找生成运行 用于每个不成功测试的公共值数据位流的码字，其中表示代码字中的位数的数据元素以与代码字的表项相对应的预定偏移量被存储，合并垂直参考代码字 以及由上述步骤生成的运行代码字以形成编码数据流，测试用于参考代码的编码数据流，从每个成功测试的参考代码直接解码垂直关系：通过表查找解码运行位 通过对每个不成功测试的所述编码数据流进行串行检查，并将通过上述步骤解码的数据存储在预定关系中 在船上
-
20.发明公开A method for converting a bit map of an image to a run length or run end representation 失效一种用于在行程长度转换图像的位图或运行结束表示方法。
公开(公告)号：EP0149122A2
公开(公告)日：1985-07-24
申请号：EP84115009.7
申请日：1984-12-11
IPC分类号： H04N1/419
摘要： 57 A method for converting an image from a bit map to a run end or run length representation includes the steps of: storing said image as a bit map representation; initializing all variables to be used in the conversion process; converting by table lookup, each run of continuous color to a run end; storing, in a run end buffer, as a count value, each run end; repeating the steps of converting and storing for each run of continuous color to the end of the image.
-
-
-
-
-
-
-
-
-
搜索结果
30 条记录 (耗时 0.015 秒)
