JPH04137976A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To grasp the deterioration in color and to adjust color adjustment by adding a color picture test pattern to a picture at a sender side and referencing the test pattern at a receiver side. CONSTITUTION:A scanner 1 adds a test pattern 103 to recognize a color to a picture at a receiver side. The picture with the test pattern is subject to required picture processing at a gamma conversion section 2, a color black/white level-conversion section 3, a density conversion section 4 and a binarizing section 5 and a coded data by an encoder 7 is written on a disk 9. A document stored on the disk 9 is sent to a communication buffer for a CCU 13 and then sent to a destination. Then a received data is read from the disk 9 and the picture data decoded by a decoder 15 is added with character information by a CG 16. Then the result is outputted to a printer 20 via a multilevel processing section 18 and a density conversion section 19. Thus, the operator visually confirms each color of the outputted test pattern to recognize the degree of deterioration in a color due to a characteristic or the like of the printer 20 based on its change and adjusts the color properly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile device that communicates color image information such as natural images.

[Prior Art] Conventionally, in all-natural color (hereinafter referred to as full-color) copying machines, a scanner section and a printer section are configured in the same device, and the scanner section and the printer section are configured so that an image of the same color as the input image is output to the printer. /The printer system is configured to perform color adjustment.

[Problem to be solved by the invention] However, in facsimile machines.

Since communication is conducted with an unspecified party, it is not possible to check whether the colors output by the printer are good on the receiving side, and if the image quality deteriorates due to printer characteristics, it is not possible to take appropriate measures. - An object of the present invention is to provide a facsimile device that can appropriately grasp the color condition of a color image transmitted by facsimile.

[Means for Solving the Problems] The present invention is characterized in that in color image communication, a test pattern of a color image is added outside the print guaranteed area of the received image outputted on the receiving side, and image data is communicated. .

[Operation] In the present invention, by adding a color image test pattern on the transmitting side, it becomes possible to refer to this test pattern on the receiving side, grasp the color deterioration, and adjust the color.

[Example] FIG. 1 is a block diagram showing one embodiment of the present invention.

This facsimile machine is configured to enable color image communication, and it converts multi-valued color image data read from a document into binary color image data and sends it, and also converts the multi-valued color image data read from a document into binary color image data and transmits the binary color image data received from the outside. It converts the image into multivalued color image data and outputs it on recording paper. When transmitting such a color image, the receiving side adds a color image test pattern outside the guaranteed printing area of the image to be output. This is what I did.

In FIG. 1, this facsimile device includes a scanner device 1 that reads an image of a document, and a γ conversion #! that performs γ conversion of the scanned image. a color/monochrome conversion section 3 that converts a color image into a monochrome image, a density conversion section 4 that converts the density of an image, and a binarization section 5 that converts multivalued image information into 2-1 image information. , a buffer memory 6 for the scanner device 211, an encoding unit (hereinafter referred to as an encoder) 7 for natural image facsimile or black and white facsimile, and an output buffer memory 8 for the encoder 7. It is a system.

This facsimile device also includes a magnetic storage device (hereinafter referred to as a disk) 9 as an external storage device, a buffer memory 10 for the disk 9, a main storage device (hereinafter referred to as main memory) 11, and a communication buffer memory. 12 and 1 communication control unit (hereinafter referred to as CCU) 13 is the main control system.

Furthermore, the facsimile device δ has a buffer memory 14,
A decoding unit (hereinafter referred to as a decoder) 15 for natural image facsimile or black and white facsimile, and a character information adding unit (
(hereinafter referred to as CG) 16, a backup memory 17, a multi-value conversion section 18 that performs multi-value conversion of received binary data, a density conversion section 19 that converts the density of received image data, and converts an image onto recording paper. Zero or more output systems for one image include a printer device 20 for printing out.

Next, the flow of control in the above configuration will be explained in detail.

First, when an image is input to the scanner device 1, a test pattern is added for recognizing one color on the receiving side.

FIG. 2 is a schematic diagram showing an example of a received image with a test pattern attached.

A normal image is printed on the print guaranteed area 102 of the received output paper 101. In addition, this printing guaranteed area 1
A test pattern 103 in nine colors from black to white is printed on the lower part of 02.

Such a test pattern is one in which, after reading an image of a transmission document using the scanner device 1, test pattern data prepared in advance in a ROM (not shown) is read out and added to the image data. It is.

Next, the image with the test pattern from the scanner device 1 is
Each color is adjusted in the γ conversion BB2, and if necessary, the color image is converted into black and white in the color black-and-white converter 3.

Furthermore, if the input image density from the scanner device 1 and the density of the image to be stored are different, the density conversion unit 4 performs density conversion for storage.

Next, the binarization unit 4 binarizes the multivalued image input from the scanner device i and sends it to the encoder 7 via the bar 27 and the memory 6. Note that the buffer memory 6 is connected to the encoder 7.
It has a buffering function between the processing speed of the scanner device 1 and the image input speed of the scanner device 1.

The data encoded by the encoder 7 is written to the disk 9 via the backup memory 8. Buffer memory 8
has a buffering function between the output speed of the encoder 7 and the writing speed of the disk 9.

Next, the documents stored on the disk 9 are sent to the communication buffer of the CCU 13 via the buffer memory IO, and
CUL 3 transmits the image data to the other party. The buffer memory 10 has a buffering function between the disk 9 and a communication buffer, and the communication buffer has a buffering function between the CCU 13 and a communication line.

Next, in the case of reception, the received data is transferred to the disk 9 in a flow opposite to that in the case of transmission.

Then, the received data is read from the disk 9 and sent to the decoder 15 via the buffer memory 14. The buffer memory 14 has the read speed of the disk 9 and the decoder 1.
It has a buffering function with a decoding speed of 5.

Next, the image data decoded by the decoder 15 is added with character information by the CG 16, and is sent to the multilevel converter 18 via the buffer memory 17. Multilevel conversion unit 18
converts the binarized information into an image for multi-value output by the printer 20 and outputs it to the printer 20 via the density converter 19 .

The buffer memory 17 has a buffering function between the speed of the decoder 15 and the output speed of the printer 20.

In this way, a document including the test pattern shown in FIG. 2 is output by the printer 20. This allows the operator to visually check each color of the test pattern, recognize the degree of color deterioration due to the characteristics of the printer 20, etc. based on the changes, and perform color adjustment operations as appropriate.Then, based on this operation, the multivalue The unit 18 can adjust each color to obtain a desired color.

As described above, in this embodiment, since the test pattern is added to the transmitted image without being read by a scanner,
It is possible to easily identify whether the image deterioration is due to the scanner characteristics on the transmitting side or the image deterioration due to the printer characteristics on the receiving side, and more appropriate measures can be taken.

In the above embodiment, an example was explained in which the test pattern was added by the scanner device 1, but even when the density conversion section 4 is provided with a test pattern addition function, the printer on the receiving side is used as in the above embodiment. Color deterioration due to characteristics can be recognized.

[Effects of the Invention] As described above, by adding test pattern information to a part of a communication image, each color adjustment on the image receiving side can be made based on human judgment.

Therefore, the receiving side can replay a received image that is closer to each color tone intended by the transmitting side.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a schematic diagram showing an example of a received image with a test pattern attached. ■...Scanner device, 2...γ conversion unit. 3... Color/monochrome conversion unit, 4... Density conversion unit, 5... Binarization unit, 6.8.10.12, 14,... Buffer memory, 7... Encoder, 8 ,,,buffer memory, 9...disk, 11...main memory, 3...CCU, 5...decoder, 6...CG. 8...Multi-value conversion section, 9...Density conversion section, 0...Printer device, 02...Printing guaranteed area, 03...Test pattern.

Claims (1)

[Claims] In color image communication, a facsimile apparatus is characterized in that a test pattern of a color image is added outside a print guaranteed area of a received image outputted on a receiving side to communicate image data.