Abstract: In a system having a server and a client apparatus, the client apparatus edits image data by using a representative image of the image data stored in the server, generates play list data indicating the order of reproducing the image data, in accordance with the editing results, and the server stores the image data sent from the client apparatus, reproduces the stored image data in accordance with the play list data sent from the client, and transmits the reproduced image data to the server.

Abstract: In a digital image having pixels pi (i=1, 2, . . . ) and a brightness B(pi) at each pixel pi, the global dynamic range of an image is changed by replacing the brightness B(pi) with the brightness B*(pi)=B(pi)×(B0/Bavg(pi))?, where B0 and ? are predefined constants, and Bavg(pi) is some average brightness value, e.g. the mean brightness over a region R(pi) containing the pixel pi. The local dynamic range is not changed significantly in some embodiments. The brightness of an image at a pixel can be defined so that multiplication of the brightness by a positive value k corresponds to multiplication of tristimulus values by k. In some embodiments, a color coordinate system is used with the brightness being one of the coordinates.

Abstract: Color is edited using a color representation including digital values B (brightness), e and ƒ such that B=?{square root over (D2+E2+F2)}, e=E/B, ƒ=F/B, where DEF is a linear color coordinate system. Alternatively, color is represented using digital values B, C (chroma) and H (hue), where cos C=D/B and tan H=E/F. Brightness can be changed without a color shift by changing the B coordinate and leaving unchanged the other coordinates e and ƒ or C and H. Other image editing techniques and other features are also provided.

Abstract: A color data conversion apparatus and method. The color data conversion apparatus includes a K ratio calculator for outputting a K ratio that is calculated using entered color data; a K ratio adjuster for adjusting the calculated K ratio, which is output from the K ratio calculator, in reference to gamut boundary descriptors (GBDs) corresponding to a K ratio and outputting the adjusted K ratio as a final K ratio; and a CMY ratio calculator for calculating C, M, and Y ratios based on the final K ratio. When converting the entered color data to the CMYK data, the calculated K ratio can be adjusted to the K ratio printable by use of the K GBDs. Accordingly, the printing apparatus can substantially print according to the calculated K ratio and thus the degradation of the printing quality can be avoided.

Abstract: The technique of the invention retrieves any print job of redundant image data having identical image identification data with the image identification data of an object job, which is specified among print jobs stored in a print server, deletes image data present on a reference path of the retrieved print job, and overwrites the reference path of the retrieved print job with a reference path of the object job. The print job in which the image data was deleted is executed by utilizing the common reference path to read remaining image data and converting the image data into print data printable with a printer. This arrangement desirably prevents identical image data from being stored redundantly and thereby effectively saves the storage capacity of print jobs.

Abstract: An image forming apparatus and an address book process request processing method are disclosed to improve access security to an address book. The image forming apparatus include an information storage part, a request receipt part and a request processing part. The information storage part stores an address book on users. The request receipt part receives process requests for the address book together with user identification information from users. The request processing part authenticates the users based on the received user identification information and performs operations corresponding to the process requests on the address book in accordance with access authority permitted to the users. The address book includes address information for transmitting data to the users via a network and management information having user identification information of the users.

Abstract: Color is edited using a color representation including digital values B (brightness), e and f such that B=?{square root over (D2+E2+F2)}, e=E/B, f=F/B, where DEF is a linear color coordinate system. Alternatively, color is represented using digital values B, C (chroma) and H (hue), where cos C=D/B and tan H=E/F. Color-to-monochromatic image conversion, or changing the color of a monochromatic image, can be accomplished by setting e and f to constant values, and possibly (not necessarily) leaving B unchanged. Alternatively, the conversion can be accomplished by setting C and H to constant values. Other features are also provided.

Abstract: This image forming device 1 comprises an image processing unit 9, an HDD 23 and an image forming unit. The image processing unit 9 is capable of instructing the output of the image data sent from the PC 43. The HDD 23 is connected to the image processing unit 9 and is capable of storing the image data to be delivered. The image forming unit is capable of receiving the instruction from the image processing unit 9 and delivering onto paper or the like the image data stored in the HDD 23. Then, when the ID information contained in the image data is detected by the image processing unit 9, writing of image data to the HDD 23 is prohibited.

Abstract: It is desired to easily and effectively correct hue and saturation in a predetermined region, for an image which cannot be desirably corrected by conversion of the brightness or colors of the entire image. To this end, an image is loaded onto a RAM, and the contrast and color balance of the input image are corrected. A predetermined region is extracted from the corrected image, and it is checked if a predetermined region is set. If the predetermined region is set, a color correction process of the predetermined region is executed.

Abstract: Patches (standard images) are printed on a printing medium with a standard ink recording quantity with a printer (printing device) 20 filled with alternative ink different from corresponding inks. The printed patches are subjected to colorimetry in the Lab color space (predetermined color space) to acquire alternative colorimetry data. The acquired alternative colorimetry data is converted into predictive colorimetry data obtained when patches are printed on a printing medium with the standard ink recording quantity with the printer 20 filled with the corresponding inks and subjected to colorimetry in the Lab color space. ID (error information) that represents the result of correlation between the predictive colorimetry data obtained by the conversion and predetermined reference colorimetry data is acquired.

Abstract: In the event of a failure of one of the image storing devices provided to process colors separately, the image data allocated for the failed image storing device is sent to the image storing devices being allocated other colors and is stored therein. In the event of a partial failure of the a magnetic disk apparatus, the number of scanning lines per unit time during the document reading operation by the image reading section is reduced from the normal level or the page spacing during the reading operation by the image reading section is increased over the normal level. This arrangement ensures apparatus functions and provides a color image forming apparatus capable of continuous operations.

Abstract: Techniques relating to gamuts and gamut mapping are described. In one instance, a process identifies a gamut attribute and generates a gamut having the attribute.

Abstract: A document reading device includes a movable member and a flexible document holder. The document holder is fixed at a first end to a free end of the movable member. The document holder is also fixed at a second end to the vicinity of a right-side end of a bottom surface of the document reading device. A portion of the document holder positioned immediately below a pivot axis of the movable member is not fixed to the bottom surface. When the movable member is pivoted to expose a portion of a document transport path, the document holder, except for the first and second ends as fixed to the bottom surface, hangs down without being folded.

Abstract: A color conversion section in an image processing apparatus converts input colors at positions of interest in input color document data to a limited number of colors, on the basis of page layout information that is updated on a page-by-page basis and delivered from a page layout analysis section, a color-assignment table that is updated on a page-by-page basis and delivered from a color-assignment table generating section, and color category attribute information relating to the positions of interest in the input color document data, which is delivered from a color categorizing section.

Abstract: It enables to construct a flexible device environment in consideration of POD, office and various use environments. To do so, a job processing method is applied to a system including an image processing device capable of executing printing of data of a job of a storage unit capable of storing data of plural jobs including at least one of first job of first processing condition, second job of first processing condition and third job of second processing condition. In the method, it causes the image processing device to finish the printing of the third job after both the printings of first and second jobs are executed, when the image processing device is operated in first sequence, and it causes the image processing device to start the printing of third job before at least the printing of second job is finished, when the image processing device is operated in second sequence.

Abstract: An image processing apparatus includes: a region recognizing unit that recognizes a region to be subjected to spot color processing in a digital image that is read from an image database in which a plurality of digital images are stored; a color information acquiring unit that acquires target color information to serve as a replacement target in the spot color processing; and a converting unit that converts color information of the region recognized by the region recognizing unit into the target color information acquired by the color information acquiring unit.

Abstract: Disclosed is a two-dimensional scanning apparatus which includes a deflecting unit for deflecting a light beam from a light source two-dimensionally, and a scanning optical system for directing the light beam deflected by the deflecting unit onto a surface to be scanned. The scanning optical system includes an optical surface which is tilted at an angle larger than a maximum angle of view relative to a central axis of a two-dimensional deflection range of the light beam deflected by the deflecting unit. The two-dimensional scanning apparatus is capable of preferably and readily correcting distortion including TV distortion which is likely to appear when a light beam is two-dimensionally deflected and scanned to from a two-dimensional image.

Abstract: A print control device with an embedded engine simulation module and the test method thereof are disclosed. With the engine simulation module is inserted in the print control device, the print engine signal is directly sent to the video signal processor of the print control device. The video signal processor follows the print engine signal along with the clock and video signals to print data signals, thereby testing the print control device. Therefore, adjustments of the print engine signal can directly simulate the situations of supporting different print engines.

Abstract: An original image is received in a red-green-blue color space. Pixels in the original image are converted to a luminance-chrominance color space. Background pixels in the original image are determined by comparing a luminance value of each pixel to a selectable luminance threshold, and comparing chrominance value of each pixel to a predetermined chrominance threshold. Chrominance values of the background pixels in each chrominance channel are adjusted.

Abstract: This image forming device 1 comprises a control unit, a connector interface 31, an external memory 33, and an image forming unit. The control unit instructs the output of a predetermined image data. The connector interface 31 is connected to the control unit. The external memory 14 can be removably connected to the connector interface 31 while it stores the output image data. The image forming unit is capable of receiving the instruction from the control unit and delivering onto paper the image data stored in the external memory 14.