JP2646000B2 - Image data processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] Regarding display processing of mask data in image data, an object of the present invention is to make it possible to see a contour of a target image included in a mask pattern, An image data processing apparatus that performs mask processing by setting a mask and replacing this part with a mask pattern stores an image memory for storing input image data, an overlay memory for storing mask pattern data, and color data for images. In addition to the first lookup table,
Further, the output from the image memory is stored in the first lookup table, the second lookup table corresponding to the output from the overlay memory for storing the color data for overlay of the value related to the image data and the output from the overlay memory. Select means for separating the input into the respective look-up tables, and when data indicating a pattern other than the mask pattern by the read scan from the overlay memory is output, the select means inputs the data by the read scan from the image memory. The corresponding color data is output from the first look-up table, and the output from the second look-up table is blocked. When data indicating a mask pattern by read scanning is output from the overlay memory, this mask is selected by the selecting means. Pattern data and images Input from the second memory, color data for overlay of values related to image data included in the mask pattern is output from the second lookup table and output from the first lookup table is blocked. The outputs from the first and second look-up tables control the display on the display via the display control unit.

[Industrial applications]

The present invention relates to image data processing, and more particularly to an image data processing apparatus capable of performing mask display processing.

In editing image data or the like, a process of setting a specific area (referred to as a mask) on an image and replacing this part with a mask pattern, or fitting another image into this part may be performed. .

In order to create and correct a mask pattern by superimposing the mask pattern on an image displayed on a display, a display device that allows both the original image and the mask pattern to be visually recognized is desired.

[Conventional technology]

FIG. 5 is a view showing a mask pattern display device according to the prior art.

 Reference numeral 1 denotes an image memory for storing image data.

Reference numeral 2 denotes an overlay memory for storing the created mask pattern data. The overlay data is stored as data in which the mask pattern portion is set to “1” and the other portions are set to “0”.

Reference numeral 3 denotes a look-up table (hereinafter, abbreviated as LUT) storing color data.

Reference numeral 8 denotes a color designation register for storing overlay color data.

The image memory 1, the LUT (3), and the color designation register 8 actually comprise data of three primary colors, R, G, and B, but one of them is shown in the figures and the following description.

LU is determined by data read by scanning the image memory 1.
Color data is output from T (3), and this output data is input to the superimposition control 9.

The read data obtained by scanning the overlay memory 2 is as follows:
When the value is "1", the color designation register 8 is read out, and the color data output therefrom is inputted to the superimposition control 9.

The superimposition control 9 selects the read output of the LUT (3) when the read output of the overlay memory 2 is “0”, and selects the read output of the color designation register 8 when the read output is “1”. 6 and the display control 6 controls the display 7 to display it. Therefore, only the mask pattern portion is displayed on the display 7 in the color designated by the color designation register 8, and the image data in the image memory 1 is displayed on the other portions.

A conventional mask pattern is created by the following method.

(1) A mask pattern is created using handwriting possible while referring to the display screen of the apparatus shown in FIG. This is performed using an overlay memory. Write the target image in the image memory and display it on the display,
A handwritten mask pattern is created on the overlay memory while watching it.

(2) Binary processing or the like is performed on the image data by an image operation,
A mask pattern is created from the binarized image.

[Problems to be solved by the invention]

The above-described method according to the related art has the following problems.

That is, when displayed on a display using a mask, as shown in the display screen at the right end of FIG. 5, the area where the overlay value is "1" hides the target image and makes the outline part invisible. The relative position between the image and the mask becomes unknown.

On the other hand, when creating a mask pattern by the handwriting function, it is difficult to create a complete mask pattern due to mistakes in manual operation of small parts, etc.
There is a problem that it is necessary to anticipate an unknown outline of the target image as described above.

[Means for solving the problem]

According to the present invention, the above problem is solved as shown in the principle diagram of FIG.
In an image data processing device that performs a mask process by setting a specific area on a display image as a mask and replacing this portion with a mask pattern, an image memory for storing input image data, an overlay memory for storing mask pattern data, A first look-up table for storing color data for image data, a second look-up table for storing color data for overlay of values related to image data, and an output from an overlay memory. Selecting means for separating an output from the image memory into respective inputs of the first look-up table and the second look-up table, and when data indicating a pattern other than a mask pattern by read scanning from the overlay memory is output Read from the image memory by the selection means The corresponding color data is output from the first look-up table and the output from the second look-up table is blocked by the input of the data, and the data indicating the mask pattern by the read scan is output from the overlay memory. When the data indicating the mask pattern and the data from the image memory are input by the selecting means, overlay color data of a value related to the image data included in the mask pattern is output from the second lookup table, and The output from the first look-up table is blocked, and the output from the first and second look-up tables is solved by an image data processing device that controls display on a display via a display control unit.

[Action]

That is, in the present invention, in addition to the image memory, the overlay memory, and the look-up table (first LUT) storing the color data for the image, the second look-up table (second LUT) storing the color data for the overlay is used. LUT) and select means, and the select means outputs the output from the image memory to the first in response to the output from the overlay memory.
And a function of separating the input into each of the lookup table and the second lookup table. Therefore, when "0", which is data other than a mask pattern, is output from the overlay memory, the data from the image memory is input to the first LUT, and color data corresponding to the data is displayed from the first LUT. Output to the section. In this case the second
No color data is output from the LUT.

On the other hand, when "1" which is data indicating the mask pattern is output from the overlay memory, the selecting means outputs the first data.
The output from the LUT is blocked, the image data from the image memory included in the mask pattern is input to the second LUT, and "1" from the overlay memory is also changed to the second LU.
Input to T.

Therefore, composite color data of the color data corresponding to the image data in the mask pattern and the color data corresponding to the data “1” indicating the mask pattern is output from the second LUT and input to the display control unit.

The display control unit controls the display based on the input color data, and the outline of the target image in the mask pattern becomes clear.

In this case, the transparency of the target image in the display image of the display displayed by combining the color data corresponding to the image data in the mask pattern by appropriately selecting the value of the color data corresponding to the data “1” for the mask pattern Can be set to a desired value, for example, LU
The inverted value of the data value of LUT1 can be set in T2.

〔Example〕

Hereinafter, the present invention will be described more specifically with reference to the embodiments shown in FIGS.

FIG. 2 is a block diagram showing the configuration of one embodiment of the present invention.

In the figure, the same reference numerals as those in FIG. 1 indicate the same objects.

The data of the image memory 1 (actually, data of R, G, B) is 8 bits, and the data of the overlay memory 2 is "1" (mask pattern portion) or "0" (other portions). .

The LUT1 (3) and LUT2 (4) output color data when the input is "1", and block output of the color data when the input is "0".

Output data obtained by scanning the image memory corresponds to the function of the selecting means, and is input to LUT1 (3) or LUT2 (4) according to the output from the overlay memory.

On the other hand, the selecting means 5 is an inverter,
The output of the overlay memory 2 is directly input to T2 (4), and the inverted output of the overlay memory 2 by the inverter 5 is input to the LUT 1 (3) as a control input.

When the overlay memory outputs "0" which is data other than the mask pattern, the output of the inverter 5 becomes 1
The data from the image memory input to the LUT 1 (3) becomes an address, and the color data corresponding to the access is output from the LUT 1 (3). In this case, since "0" is input to LUT2 (4), no color data is output from LUT2 (4).

On the other hand, if data “1” corresponding to the mask pattern by the read scan is output from the overlay memory, the LUT1
Since (3) is input with 0 by the inverter 5, LU
No color data is output from T1 (3).

On the other hand, 1 is input to LUT2 (4), and this LU
Since data from the image memory by read scanning is input to T2 (4), the data from the image memory is used as an address from this LUT2 (4) to output color data corresponding to the access. .

In this embodiment, the value of LUT1 (3) is 0 to 255 for an 8-bit input, and the value of LUT2 (4) is LUT1 (3).
(3) is 255 to 0 inverted.

Therefore, the obtained display is a composite image of the color data corresponding to “1” and the color data inverted from the other parts in the mask portion, and can be easily recognized in the mask portion and the image in the mask can be visually recognized. Can be.

FIG. 3 is a block diagram showing the configuration of another embodiment of the present invention.

Data y stored in LUT2 (4) in the present embodiment is
The value is shown by the following equation.

y = a (C−x) / 100 + x where: x: image data C: color of “1” portion of overlay a: opacity% = (100− (transmittance))% That is, LUT2 (4 The data y) stores the value calculated based on the value of the color C and the opacity a of the “1” portion of the designated overlay. For example, the opacity a is 100 (%),
That is, when the transmittance is 0%, the color C of the "1" portion of the overlay is displayed as it is, and the opacity a is 0%, that is, the transparency.
At 100%, the value x of the image is displayed as it is.

When the opacity a is specified as 50% (the transmittance is also 50%), y = 0.5C + 0.5x.

LUT1 (3) outputs x for the image value x when the read value of the overlay memory 2 is "0", similarly to LUT1 (3) in FIG. When the read value of the overlay memory 2 is "1", that is, in the mask pattern portion, the LUT2
(4) is selected, and y that is a combination of C corresponding to “1” and the value x of the image is output.

FIG. 4 is a diagram showing another embodiment of the selecting means.

In FIG. 4, one bit of the data of the overlay memory 2 becomes higher-order bits than 8 bits of the data of the image memory 1, and the LUT is accessed with 9 bits.

The upper half of the LUT (inputs 0 to 255) is the LU shown in FIG.
Like T1 (3), the lower half (input 256-511) is the second half
It is the same as LUT2 (4) shown in the figure.

LUT when the read value of overlay memory 2 is "0"
The lower part of the LUT is read in the lower part, that is, in the mask pattern part, and the same operation and effect as in FIG. 2 can be obtained.

〔The invention's effect〕

As described above, according to the present invention, a mask pattern portion can be easily distinguished from other image portions, and image data in the mask pattern can be easily visually recognized. The effect on the operability is extremely large because it can be visually confirmed and the whole image is easily grasped.

[Brief description of the drawings]

 FIG. 1 is a block diagram showing the principle of the present invention, FIG. 2 is a block diagram showing a configuration of one embodiment of the present invention, FIG. 3 is a block diagram showing a configuration of another embodiment of the present invention, and FIG. FIG. 5 is a block diagram showing a configuration of a conventional example. In the drawing, 1 is an image memory, 2 is an overlay memory, 3 is a LUT1, 4 is a LUT2, 5 is a selection means (inverter), 6 is a display control, 7 is a display, 8 is a color designation register, and 9 is superimposition control. Are respectively shown.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-24369 (JP, A) JP-A-60-95593 (JP, A) JP-A-60-128498 (JP, A) JP-A 61-1986 113097 (JP, A) JP-A-62-136695 (JP, A) JP-A-61-41274 (JP, A) JP-A-59-500024 (JP, A) Japanese Utility Model Publication No. 62-51388 (JP, U)

Claims (1)

(57) [Claims] 1. An image data processing device for performing a mask process of setting a specific area on a display image as a mask and replacing this portion with a mask pattern, an image memory for storing input image data, and storing mask pattern data. An overlay memory, a first look-up table for storing image color data, a second look-up table for storing overlay color data of values related to the image data, and an overlay memory. The output from the image memory is stored in the first lookup table,
Select means for separating the input into the respective look-up tables, and when data indicating a mask pattern other than the mask pattern by the read scan from the overlay memory is output, the select means inputs the data by the read scan from the image memory. The corresponding color data is output from the first look-up table and the output from the second look-up table is blocked. When data indicating a mask pattern by read scanning is output from the overlay memory, this mask is output by the selecting means. By inputting data indicating the pattern and data from the image memory, color data for overlay of a value related to image data included in the mask pattern is output from the second lookup table and the first lookup table from Force is blocked, first, the output from the second look-up table image data processing apparatus and controls the display of the display through the display control unit