摘要:
When image data are sent through a network, bit streams of hierarchically encoded JPEG 2000 data of a plurality of pages of a document are formed by prioritizing resolution, and the bit streams of the plurality of pages are divided in a plurality of files based on the unit of hierarchical encoding such as resolution or layer level. Then, the plurality of files of all the pages are arranged into a plurality of combinations thereof based on resolution or layer level. Then, an electronic mail is written and sent to the same destination for each of the combinations by attaching all the files included therein.
摘要:
The invention provides an image processing system which can give different securities to data of respective receivers with a simple operation and, in this case, which can realize shortening of time for communication to a destination and suppression of use of memory resources. A plurality of regions preset in image data are related to destinations, code data constituting one of regions corresponding to the destinations or the other regions is replaced with code data which make pieces of information included in the regions invisible in the JPEG2000 file transmitted to the destinations, and the JPEG2000 file after the replacing process is transmitted to the destinations.
摘要:
On JPEG2000 coding apparatus, the coding process is performed by discriminating an area defined by each object contained in image data and specifying type of the object, performing character recognition processing on the area discriminated as that containing a character to produce a text data and producing an XML data corresponding to said text data, adding an XML box that can store a specific data into a bit stream constructing said JPEG2000 file so as to be positioned in back of a predetermined level of wavelet decomposition and causing said XML box to store said XML data. On the other hand, on JPEG2000 decoding apparatus, the decoding process is performed by causing user to select whether to read an XML box added into a bit stream of JPEG2000 file in the middle of JPEG2000 decoding process, and processing the XML data stored in the XML box to acquire a text data.
摘要:
An image processing apparatus for performing at least one of JPEG 2000 encoding and decoding processes, including: a JPEG 2000 hardware encoder-decoder including a memory that performs wavelet transform and inverse transform of image information up to a specific tile size using only hardware components; an acquirer for acquiring a tile size information of image data to be encoded or decoded; a determiner for determining whether the acquired tile size can be processed using only said JPEG 2000 hardware encoder-decoder or not; a selector for selecting one of a first and second process based on result of a decision by said determiner, the first process being wavelet transform and inverse transform process performed using only components constituting said JPEG 2000 hardware encoder-decoder and the second process being wavelet transform and inverse transform process performed using components other than components constituting said JPEG 2000 hardware encoder-decoder.
摘要:
An additional data useful for the management of copies of a document for an image forming apparatus is embedded in a hard copy of the document. The additional data is embedded in an inherent image of a document as discrete dots arranged in a prescribed format. Preferably, the size of each of said discrete dots is not so large as to be recognized easily with naked eyes. The additional data can be embedded in unit of blocks. Further, the density of the discrete dots is different from the density adjacent to the discrete dots. The image data for embedding an additional data can be obtained by reading a document, or by receiving data sent from a computer or read from a floppy disk. An additional data embedded in a hard copy can be extracted from the image data on the hard copy. Further, the production of a copy according to the image data can be controlled according to the extracted additional data. For example, if the additional data means that the source of the hard copy is a secret document, the copying is allowed only for a legitimate user. An additional data is generated for each copy according to the extracted additional data for embedding it in a hard copy to identify each copy. The additional data generated for each copy are compiled and they are used to manage copies of various sources systematically and illegal copies can be traced easily. If the additional data received from a printer is not consistent with the additional data already stored, the printing may be prohibited. A transmitter for transmitting an additional data may be provided in a document such as a book.
摘要:
The invention relates to an image reading apparatus for reading images of original documents by moving the original relative to a stationary image reader. A single image reader is used in a first embodiment. When reading the image of a first side, the single image reader is stationary at a first position to read the original. When reading the image of a second side, the single image reader is moved to a second position corresponding to the size of the original, and reads the image of the second side while said image reader is stationary at the second position. The image reading apparatus of the second embodiment uses a stationary first reader for reading a first side of an original, and a movable second image reader for reading a second side of an original. The image reading apparatus of the second embodiment changes the position of the image reader in accordance with the size of the original.
摘要:
Additional data useful for the management of copies of a document for an image forming apparatus is embedded in a hard copy of the document. The additional data is embedded in an inherent image of a document as pixels arranged in a prescribed format, and, preferably, the size of the pixels is such as to not be easily recognized with the naked eye. The image data for embedding the additional data can be obtained by reading a document, or by receiving data sent from a computer or read from a floppy disk. Additional data embedded in a hard copy can be extracted from the image data on the hard copy, and the production of a copy according to the image data can be controlled according to the extracted additional data. For example, if the additional data means that the source of the hard copy is a secret document, copying thereof is allowed only for a legitimate user. Additional data generated for each copy is compiled and is used to manage copies of various sources systematically.
摘要:
In a shadow process mode, a scanner reads out an original with a first exposure lamp in a first scanning operation. The readout image data is stored in an image memory via an I/O control unit. In the second scanning operation, the scanner reads out the original with a second exposure lamp having an illumination direction different from that of the first exposure lamp. The image data read out in the second scanning operation and the data stored in the image memory are subtracted for each pixel by a subtractor. The difference thereof is compared with a predetermined value in a comparator. The compared result is output to a selector, whereby a desired image data is provided to a printer processing unit via the I/O control unit.
摘要:
In a data processor, image data of a pixel matrix is subjected to orthogonal transformation to coefficient data, the coefficient data is quantized with a first quantization table for character image and a second quantization table for half-tone image, and the image data is discriminated to be character image data or half-tone image data according to the quantization data. The selected data is then coded. In another processor, image data are divided into first and second processing blocks of m*m and M*M pixel matrices wherein M>m and the second processing block includes one of first processing blocks and adjacent pixels. Image data in a first and second processing block are subjected to orthogonal transformation to coefficient data. It is discriminated according to the coefficient data of the second processing block if the image is a character, dot, or half-tone image to select an appropriate quantization table, and image data of the first block is quantized according to the selected table and the quantized data are coded. In a further processor, two discrimination windows are provided, the first having coefficient data around the DC component and the second having the other data. Orthogonal transform coefficients of image data in a processing block are calculated, and maximum of absolute values in the windows are obtained. An image is discriminated to be a dot image if the maximum of the first window is larger than the second and larger than a threshold value.
摘要:
The present invention relates to an image scanning apparatus for scanning the image of a document by moving a light source along the document image. In the image scanning apparatus of the present invention, the light source and the drive circuit for generating a high voltage to turn on the light source are mounted on a slider movable along the document image.