Abstract: A system is constructed by connecting a plurality of digital copying machines (stations) having a common structure, and a master station 1001 and slave stations 1002 to 1004 are defined in accordance with their addresses. The master station 1001 issues a status request command to the slave stations at a predetermined time interval in order to gather information on the status of each slave station. The status which can be used in the system are recognized, depending upon the information, and a user selects the station or stations to be used. One of the station is made to read an original image, and the image is printed by the selected station or stations. The above constructed image processing system results in good expandability.

Abstract: An image processing apparatus decrypts encrypted image data and synchronously outputs predetermined information with the decrypted image data such that the predetermined information is not visually recognizable on an image reproduced from the decrypted image data. The apparatus outputs the decrypted image data and the synchronously output predetermined information to an image forming unit.

Abstract: An image processing system includes a plurality of image processing devices which are sequentially connected to transmit image data to each other. Each device includes a storing unit for storing image data, and any one of the devices which is not currently selected for transmission can concurrently be used as a copy machine.

Abstract: An image processing apparatus includes an input device for image data, a discriminating device for discriminating a type of an image represented by the image data, a setting device for setting a discrimination standard of the discriminating device, and a display for displaying a condition of the setting device.

Abstract: An image forming system includes a plurality of interconnected image forming devices each of which has a storage unit which stores an image signal. The system has an image input unit for entering an image signal, and an image processing unit which processes the image signal entered by the image input unit. A transfer unit simultaneously transfers the image signal, which has been processed by the image processing unit, to the plurality of image forming devices.

Abstract: A plurality of apparatuses can execute an encrypting process on an image signal are connected. The encrypting processes which are executed in those apparatuses are independently performed, so that the connection of an improper apparatus is made impossible and, in this state, a more advanced signal process can be performed, thereby giving no disadvantage to the user. For this purpose, there is disclosed an image processing apparatus comprising a first encrypting circuit for encrypting the image data and supplying to a first apparatus and a second encrypting circuit for encrypting image data and supplying to a second apparatus different from the first apparatus, wherein the first and second encrypting means execute independently the encryption.

Abstract: An image forming system includes a plurality of sequentially connected image forming apparatuses, each of which stores image data in a storage unit, and forms an image by reading out the stored image data. The image forming system also includes at least an apparatus for storing input image data into a memory after compressing the information amount of the data, and forming an image by reading out the compressed image data from the memory. A predetermined one of the image forming apparatuses includes an input unit for inputting color-separated image data of each different color, a storage unit for storing the color-separated image data without compressing the information amount of the data, and an output unit which is capable of outputting the color-separated image data of each different color in a frame-sequential manner from the storage unit, and which is capable of outputting the color-separated image data of each different color in parallel.

Abstract: A copying apparatus includes an input device for inputting image data, a processing circuit for performing mosaic processing of the input image data, and a reproduction circuit for reproducing an image based on the processed image data. The processing circuit divides the input image data into a plurality of block areas and paints each block area with a uniform color according to the image data in the area so that the resolution of the image data is lower than the resolution of the original image.

Abstract: An image processing system has an external image processing apparatus and an image input/output apparatus. One of the apparatuses acts as a transmission-side apparatus and the other apparatus acts as a reception-side apparatus. The transmission-side apparatus transmits image data and includes a reception device for receiving an encryption instruction from an apparatus which receives image data, and an output device for encrypting the image data on the basis of the encryption instruction and outputting the encrypted data to the apparatus at a reception side. The reception-side apparatus receives image data and includes a transmitting device for transmitting the encryption instruction, and a decrypting device for decrypting the encrypted data on the basis of the encryption instruction.

Abstract: An image processing apparatus includes a circuit for inputting a plurality of color component signals of a subtractive color system, a circuit for detecting a minimum value signal of the color component signals input by the input means, a circuit for emphasizing a high-frequency component of the minimum value signal detected by the detection means, and a circuit for discriminating a feature of an image in accordance with the minimum value signal whose high-frequency component is emphasized by the emphasizing means.

Abstract: An image processing apparatus processes an input image, detects an isolated point in the input image, and controls the image processing according to detection of the isolated point, thereby eliminating noise conventionally involved in a color conversion to red of an image contour.

Abstract: An image processing apparatus includes a synthesizing unit for synthesizing a color image and a binary image, a processing unit for performing multigradation processing of the color image and high-resolution processing of the binary image, and a control unit for controlling the processing unit to preferentially execute the high-resolution processing for an area where the color and binary images overlap each other.

Abstract: This invention provides an image processing apparatus provided with an outline extracting section for extracting an outline of an input image and a color converting section for converting the color of the outline extracted into a predetermined color. This apparatus is therefore capable of extracting the outline of an input image, applying color conversion to the outline extracted, and emphasizing a pattern such as a character, a graphic pattern or the like. The apparatus is further provided with a converting-color designating section for designating a converting color to be applied to the outline, a color detecting section for detecting a portion having a predetermined color in the input image, and a region designating section for designating a predetermined region in the input image. Accordingly, the outline alone can be independently processed so that an outlined character, a shaded character or the like can be formed.

Abstract: There is provided a color image processing apparatus comprising color conversion circuit for converting image data to a desired color, feature extraction circuit for extracting a feature of the image data and image correction circuit for correcting the image data on the basis of the feature extraction circuit, characterized in that a color conversion processing is executed prior to extraction of feature from the image data.

Abstract: An image processing apparatus is provided with an input circuit for inputting a plurality of multilevel signals, each corresponding to a respective one of a plurality of pixels. An emphasizing circuit emphasizes a high frequency component of one of the multilevel image signals by using the multilevel image signals of a plurality of pixels and outputs the emphasized multilevel image signal. A discriminator discriminates a dot area of an image represented by the one multilevel signal input by the input circuit, by using the multilevel image signals of the plurality of pixels whose high frequency component is emphasized by the emphasizing circuit. The number of pixels used by the discriminator is larger than the number of pixels used by the emphasizing circuit.

Abstract: An image processing apparatus includes an input unit for inputting a color image signal, an extraction unit for extracting an outline portion from the color image signal, and an output unit for outputting the outline portion extracted by the extraction unit in multi-colors indicated by the color image signal.

Abstract: An image processing apparatus performs texture processing, wherein second image data is modulated in accordance with first image data, and a density of the output image is adjusted appropriately by adjusting a D.C. level or a A.C. level of the modulated second image data.

Abstract: An image processing apparatus includes a) a memory unit for storing input image data, b) a detecting unit for detecting a black line image using at least one of the input image data and image data read out from the memory unit, and c) a processing unit for performing image processing on the basis of the data read out from the memory unit and the detection result.

Abstract: An image processing apparatus includes a conversion unit for scanning an original and converting an original image into image data, a binarization unit for binarizing first image data converted by the conversion unit, a memory unit for storing the first image data binarized by the binarization unit, a synthesizing unit for reading out the binary first image data stored in the memory unit and synthesizing the readout binary first image data and second image data converted by the conversion unit, and a zoom processing unit for performing zoom processing of the binary first image data independently of the second image data before synthesis by the synthesizing unit and after write access of the binary first image data.

Abstract: An image processing apparatus includes an input unit for inputting a plurality of color component signals of a primary color system, a detection unit for detecting a value according to a minimum value signal of the color component signals input by the input unit, and a discrimination unit for discriminating a dot area of an image on the basis of the value according to the minimum value signal detected by the detection unit.