JPS6257079A - Smoothing device - Google Patents

Abstract

PURPOSE:To perform correct smoothing by using the result of smoothing for the input of smoothing decision of the next and succeeding points. CONSTITUTION:A selector 7 outputs data of a Y axis counter 2 at read timing of a memory 4 and outputs data of a register 6 at the write timing. Since a register 8 latches output data of a pattern memory 1 and output data of the memory 4, data of 3 columns are latched. Since a register 9 latches an output of the resistor 8 and an output of a ROM 10, data of 2 rows X 3 columns is latched. The ROM 10 applies the smoothing of the center picture element in the picture elements of 3 rows and 3 columns based on the data fed from the registers 8, 9. A buffer 11 latches an output of the ROM 10 and data at an input terminal B of the ROM 10 and outputs the data at the write timing of the memory 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a smoothing device for smoothing the outline of a display pattern.

[Conventional technology]

Conventionally, in order to smooth the outline of the display pattern,
Smoothing is performed using 3x3 mask processing. As shown in Figure 7, if the shaded area is the light-emitting part and the other parts are non-light-emitting parts, the solid line shown in the bold line in the figure is used to erase the protruding light-emitting part "A". As shown in the figure, a 3×3 pixel range centered on the light emitting portion “A” is subjected to mask processing. Since the pixels on both sides of the light-emitting part "A" are non-emissive parts, this masking process makes the light-emitting part "A" the same non-emissive state as the pixels on both sides, eliminating protrusions and smoothing. be. and,
If such processing is performed for all pixels, the outline of the display pattern will be displayed smoothly.

[Problem that the invention seeks to solve]

However, if we mask the area indicated by the dashed-dotted line in Figure 7 from the table, the conventional method performs processing based on the pattern in Figure 7, so the pixels on both sides of the non-light-emitting part "mouth" become light-emitting parts. The non-light-emitting part "mouth" changes to a light-emitting state.

Therefore, when smoothing a display pattern in which light-emitting parts and non-light-emitting parts appear alternately as shown in FIG. 7, even if points around the point of interest have been smoothed, it cannot be determined and smoothing cannot be performed.

[Means for solving problems]

In order to solve these drawbacks, the present invention feeds back the results of smoothing and sequentially performs smoothing.

[Effect]

The smoothed information will not be changed by subsequent smoothing.

〔Example〕

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

In the same figure, 1 is the display pattern row row before smoothing ×
Pattern memory that stores m columns (m, n are positive integers), 2 outputs the Y-axis (vertical axis) address of pattern memory 1, and is cleared when the count reaches the end address of the Y-axis. The Y-axis counter 3 is counted up at the timing when the Y-axis counter 2 is cleared, and outputs the X-axis (horizontal axis) address of the pattern memory 1. 4 is a memory for storing two columns of data in pattern memory 1, and as described later, this is designed to output pixel data in rows 91 columns and 2 columns before the data stored in pattern memory 1. It has become. 5 is Y-axis counter 2
output data and the value of the end address when clearing Y-axis counter 2; otherwise, all bits are
'' is a counter that adds data υ, and its output is designed to output data obtained by subtracting 1 from the value of Y-axis counter 2. 8.8.9 is a register, T is a selector, and! 11, the selector T outputs the data of the Y-axis counter 2 at the read timing of the memory 4, and outputs the data of the register 6 at the write timing.

Register 8 is the output data of pattern memory 1 and memory 4.
Since register 9 latches the output data of , three columns of data is latched. Also, register 9 latches the output of register 8 and the output of ROM, which will be described later, so data for 2 rows x 3 columns is latched. The data is latched. Reference numeral 10 denotes a ROM for smoothing the central pixel among the pixels in three rows and three columns based on data supplied from registers 8 and 9. 11 is a buffer; 9;
Since the output of ROM10 and the data of input terminal B of ROM10 are latched and the data is output at the writing timing of memory 4, if the address of the smoothed pixel is (x, y), the smoothed Display data of address (z, y) and address (xi.

K is configured to output the display data of y).

12 is a processing device.

In the apparatus configured as described above, the operation when smoothing the display pattern of 5 pixels in the vertical and horizontal directions shown in FIG. 2 is as follows. The display pattern smoothed by this device is the pixel at its outer edge, that is, the coordinate X=0 in FIG.
, Pixel @ ~ @ of Y=0.1.2,3.4, Coordinates X-4, Pixel Q NF of Y=0.1,2,3.4, Coordinates Y=0, X-1,2, The condition is that pixel No. 3, f, h, p1 coordinates Y=4, pixel J+0+j of X=1.2.3, is a non-light-emitting portion. Figure 3 shows the pixel arrangement when smoothing processing is performed.
The pixel data for each location of the construction is in the ROMI shown in Figure 1.
Of the input terminals A-I of O, data is supplied to points corresponding to the symbols, and data at terminal E is data to be smoothed.

FIG. 4 is a diagram showing the signal timing of each part of this device. Signal processing is performed as shown in the diagram by various timing signals supplied from the processing device 12, and finally the signal timing shown in FIG. ) is output from the ROM 10.

Note that "at+bl+cl+dl-" indicates data for pixels ay shown in FIG. 2 that has been smoothed, and symbol i shown in FIG. 2(f) indicates output. represents the input – this results in ROM
The data for the 10 inputs is as shown in Table 1.

Table 1 ゛After the timing of X, Y address (2, 2) in Table 1, pixel g in Figure 2 and all surrounding pixels are aligned.
At this time, the nine data read out from the pattern memory 1 are the data of pixel m. Here, the smoothing judgment result for pixel g is output, and the result after smoothing judgment for the data of pixel g is that the X and Y addresses are (2, 3), (
Required at positions 3,1), (3,2), and (3°3).

Therefore, the output of the ROM 10 in Fig. 1 is fed back, and the information on the picture fAg required at the x, y address (2, 3) position is realized by supplying the output of ROMIQ to the input of register 9. are doing. If the X and Y addresses are (
At the position (3,1), the information of the pixel g written in the storage memory 4 for two columns in FIG. 1 at the position whose X, Y address is (2,2) is read out. 2) The read Y address at the time point is "2", and the read Y address at the time point of address (3, 1) is 1.

Therefore, when writing the smoothing result of pixel g at address (2, 2) from ROMI Q to memory 4 via buffer 11, the value obtained by subtracting "1" from the value of Y-axis counter 2 is written to the selector. Selected with T. Also, the address (3,
2) At timings (3, 3), the problem is solved by latching the contents of memory 4 with registers 8 and 9.

By performing the above-mentioned operations, Figure 5 (&)
In the figures shown in FIGS. 6(a) to 6(d), the center portions are masked in a non-emitting state, and in the figures in FIGS. 6(a) to 6(d), the center portions are masked in a light emitting state. (The shaded area is the light emitting area) [Effects of the Invention] As explained above, the present invention has the effect that correct smoothing can be performed because the smoothing results are used as input for smoothing determination for the runner-up and subsequent points.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of a display pattern, FIG. 3 is a diagram showing a set of pixels, FIG. 4 is a time chart, and FIGS. FIG. 7 is a diagram showing the display state. 1. Fight - pattern memory, 2, 3... counter,
4. Clear...Memory, 5...Adder, Li2...
Register, 10...ROM. 11...Buffer.

Claims (1)

[Claims] A smoothing device that smoothes an image pattern by performing mask processing, the smoothing device comprising a feedback circuit that feeds back mask processing results and a smoothing circuit that performs smoothing using the feedback results.