JPS62168274A - Picture processor - Google Patents

Abstract

PURPOSE:To display simultaneously both pictures obtained before and after variable density processing conversion by providing two display parts. CONSTITUTION:Picture data is stored in a picture memory 1 via an external input/output interface 5 and then read out of the memory 1 through addresses designated by a display output address counter 7A in the display output order. Then the picture data undergoes conversion through a look-up table LUT2 for variable density conversion and is displayed at a display part 4A via a display part interface 3A. While the picture data read out of the addresses of the memory 1 designated by a display output address counter 7B in the display output order is supplied directly to a display part interface 3B. Then the pictures undergone no variable density conversion processing are displayed. Thus it is possible to decide easily whether the variable conversion processing under execution is appropriate or not.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing device that performs processing such as gray scale conversion of a single displayed image.

[Conventional technology]

FIG. 2 is a diagram of a conventional image processing apparatus of this type. Second
In the figure, (1) is an image memory that stores digitized image data and has a storage capacity for one screen.

(2) is a rewritable look-up table memory (hereinafter abbreviated as "LtTTJ") for performing tone conversion of the image data output from this image memory (Il). (3) is this L U This is a display unit interface that creates an image display signal from the image data output from the T+21 after conversion to gray scale.(4) is a display unit that displays an image based on the image display signal output from this display unit interface (3). (5) is the above image memo January 1)
This is an external input/output interface for inputting and outputting image data between the computer and the outside.

(61 is an external input/output address counter for creating the address of the image memory CI+ that inputs and outputs image data via this external input/output interface. (7
) is a display output address counter that creates an address of the image memory fil that outputs image data to be displayed on the display section 14). (8) is this display output address counter (7) and the external input/output address counter (6).
) is a multiplexer for switching and supplying the output of the image memory (1). 191 is this multiplexer +81. L U T +21. A control signal creation unit that creates operation timings for the display unit interface (3), external input/output interface (5), external person outgoing address counter (6), and display output address counter (7) and controls their hardware. It is.

The CIG is a processor that has various general-purpose arithmetic processing functions, information storage, and input/output functions, and controls and manages the entire operation of the device. σB is an operation unit through which a person instructs the processor α1 to control the device. α2 is an operating unit interface for transmitting the operation contents of this operating unit αυ to the processor α.

Next, the operation will be explained. This image processing device is LtT
The gray scale conversion process of the display image is mainly performed centering on T+21'i. The image data is stored in the external input/output address counter (6) of the image memory fi+ via the external input/output interface (5) at addresses specified in the order of two inputs. The image data stored in the image memory +11 is read out from the address designated by the one display output address counter (7) in the order of display output, and is supplied to the address terminals of I and UTi21. The contents of the corresponding address of this LUT+21 are displayed on the display section +41 via the display section interface (3) as display image data. Since the image data shows the shading of each blind pixel, L
By appropriately rewriting the contents of tTT+21 under the control of the processor [alpha], the grayscale conversion process of the display image is performed in accordance with the contents.

[Problem that the invention seeks to solve]

The conventional image processing device is configured as described above.
Since it is equipped with only one display interface, one display unit, and one display output address counter, it is not possible to display the image after the grayscale conversion process and the image before the process at the same time. There was a problem in that it was difficult to judge whether it was appropriate by comparing it with the image.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an image processing device that can simultaneously display images before and after gradation conversion processing.

[Means for solving problems]

An image processing device according to the present invention includes two display sections.
A display unit interface that displays image data output from the image memory on one display unit via I, T7T, and another display unit that displays image data output from one image memory directly on the other display unit. A display interface is installed, and two
an external input/output interface and an external input/output address counter that are provided with two display output address counters and input and output image data between the image memory and the outside;
A multiplexer that switches and supplies the outputs of this external input/output address counter and the above two display output address counters to the image memory, a control signal generation unit that controls the hardware of each part, an operation unit that inputs instructions for control contents, and an operation unit It is equipped with an interface and a processor that controls and manages the entire device.

[Effect]

In this invention, there are two sets of two display interfaces and display units, one display unit displays the image data after performing gradation conversion processing using the 1LUT displayed from the image memory, and the other display unit displays the image data. To display image data output from memory without processing it. Therefore, in the configuration of the present invention, images before and after the gradation conversion process can be displayed simultaneously.

〔Example〕

FIG. 1 shows an embodiment of the present invention. In FIG. 1, reference numeral (1) is an image memory for storing digitalized image data, and is provided with a recording capacity f for one screen. (2
) is a rewritable LUT for performing tone conversion of image data output from the image memory (1).

(3A) is a display unit interface that creates an image display signal from the image data that is gray-scale-converted and outputted from this LUT (2). (3B) is a display unit interface that directly creates an image display signal from the image data output from the image memory (1). (4A) is a display section that displays an image based on an image display signal output from the display section interface (3A). (4B) is a display section that displays an image based on an image display signal output from the display section interface (3B). (5) is an external input/output interface for inputting/outputting image data between the image memo IJfl+ and the outside.

+61 Fi This is an external input/output address counter for creating an address for the image memo January 1) that inputs and outputs image data via this external input/output interface.

(7A) is a display output γ address counter for creating an address of the image memory (1) for outputting image data to be displayed on the display section (4A). (7B) is a display output address counter that creates all addresses of the image memory (1) for outputting image data to be displayed on the display section (4B). (81 is a multiplexer for switching and supplying the output of these display output address counters (7A buff B) and the external input/output address counter (61) to the image memory (IIK). (9) is this multiplexer Isl, LU T +21.Create the operation timing of the display interface (3A) (3B), external input/output interface (5), external input/output address counter (61) and display output address counter (7A) (7B) and adjust these hardware. This is a control signal generation unit that performs control. 4 is a processor that has general-purpose arithmetic processing functions, information storage, and input/output functions for each building, and controls and manages the entire operation of the device. σ11 is a processor aIK This is an operating unit for a person to instruct the control content of the device. αah is an operating unit interface for transmitting the operating content of this operating unit συ to the processor Q. The image processing device configured as described above The image data stored in Image Memo!
)' is displayed on the display section (4A). On the other hand, the image data read from the address of the image memo (Jan.
3B) and the image that is not subjected to #light conversion processing is displayed. That is, the image after the grayscale conversion process can be displayed on the 2nd display part (4A), and at the same time, the image before the grayscale conversion process can be displayed on the display part (4B).

〔Effect of the invention〕

As described above, according to the present invention, there are two display interfaces and two display sections, and one display section has an LUT.
*ff
1, the images before and after the shading conversion process can be displayed at the same time, which has the effect of making it easy to determine whether the shading conversion process being performed is appropriate by comparing it with the image before the process.

[Brief explanation of drawings]

FIG. 1 is a diagram of one embodiment of the image processing device of the present invention, and FIG.
The figure shows a conventional image processing device. In the figure, (1) is the image memory, (2) is the LUT, (
31 (5A) (3B) is the display interface,
(9 ) is the control signal generation unit, α1 is the processor, aυ is the operating unit, and α2 is the operating unit interface.

Claims (1)

[Claims] An image memory that stores digitized image data, a look-up table memory that performs shading conversion of the image data output from this image memory, and a shading-converted output from this look-up table memory. A display unit interface that creates an image display signal from image data, a display unit interface that creates an image display signal directly from the image data output from the image memory, and an image display signal output from these display unit interfaces. create two display sections for displaying each image, an external input/output interface for inputting and outputting image data to and from the image memory, and an address for the image memory for inputting and outputting image data from this external input/output interface. External input/output address counter and 2 above
Two display output address counters that create the address of the image memory that outputs image data to be displayed on one display section, and the outputs of these two display output address counters and the external input/output address counter are switched and supplied to the image memory. a multiplexer for controlling the multiplexer, a control signal generator for controlling the hardware of the multiplexer and the above-mentioned parts, a processor for controlling and managing the above-mentioned parts, and an operation part and an operation part for a person to instruct the processor to control contents. An image processing device comprising an interface.