JPS63311868A - Picture processing device - Google Patents

Abstract

PURPOSE:To reduce the processing time and to simplify the processing by using a digital signal as a picture data with respect to a picture element and thinning or multiplying the signal based on the magnification and reduction rate. CONSTITUTION:A picture input means 1 receiving a picture data as a digital signal with respect to the picture element, a picture data storage means 2 storing the data, a magnification input means 3 inputting the magnification reduction rate, a magnification reduction means 4 magnifying/reducing the picture data stored in the storage means 2 by thinning or multiplying the data based on the magnification/reduction rate inputted from the magnification input means and a picture display means 5 displaying the magnified and reduced picture data are provided. Thus, the high speed processing is applied because of magnification/reduction through the interleaving or multiplying in this way and since the similar means are used for all the magnifications, it is not required to prepare details in response to the magnification in advance and the processing is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing device that distorts image data and performs processing such as enlargement and reduction.

[Conventional technology]

Conventionally, as a general method for enlarging or reducing image data, there has been a method in which a plurality of pixels are associated with a different number of pixels depending on the magnification by majority vote of the plurality of pixels.

There is also a method in which a pattern to be converted according to a pixel pattern and a magnification is determined in advance and processing is performed in accordance with the pattern.

[Problem that the invention seeks to solve]

However, with conventional image data scaling methods,
There are problems in that the processing takes a long time and a large number of patterns are inserted in advance, resulting in a large number of parts to be processed.

[Means for solving problems]

As shown in FIG. 1, the image processing device of the present invention includes: image input means 1 for inputting image data as digital signals for pixels; image data storage means 2 for storing image data; and enlargement of image data. a magnification input means 3 for inputting a reduction ratio; and a scaling means for scaling the image data stored by the storage means 2 by thinning or multiplying it based on the scaling ratio input by the magnification input means. 4, and an image display means 5 for displaying the image scaled by the enlargement/reduction means 4.

〔Example〕

The details of the image processing apparatus of the present invention will be explained below based on illustrated embodiments.

FIG. 2 shows an embodiment of the image processing apparatus of the present invention, and reference numeral 6 in the figure indicates an image scanner,
Image data such as a document is input as digital data for pixels. Reference numeral 7 is a CPU that controls the entire process including scaling. Reference numeral 8 denotes a keyboard for inputting scaling factors and commands to the CPU. code 9
is a ROM, into which image data input from the image scanner 6 or processed image data is input.

Reference numeral 10 denotes a RAM, which temporarily stores image data for processing and temporarily stores processing procedures. code 1
1 is a CRT that displays processed image data as an image.

Next, the operation of the image processing apparatus configured as described above will be described based on the flowchart of the third rXJ.

When a command is input from the keyboard 8, the CPU 7 starts executing the process (step ■). First, input is made from the keyboard 8 as to whether or not to input new image data using the image scanner 6 (step ■). When using the image scanner 6, the image data is input using the image scanner 6 (step ■), and when using the stored image data, the image data stored from the ROM 9 is used (step ■).

Next, input the horizontal magnification of the image using the keyboard 8 (step ■), perform horizontal scaling operation (step ■), input the vertical magnification of the image (step ■), Perform enlargement/reduction operations in the and directions (step ■). The image data processed in this way is displayed using CRTII (step 9). To save the processed image data, enter a command using the keyboard 8 (step [phase]) and save it in the ROM 9 (step
).

Next, perform the scaling operation': Figure J4, Figure 5, Figure 6, Figure 7.
This will be explained using figures.

FIG. 4 shows the horizontal direction of the pixel before reduction, and FIG. 5 shows the horizontal direction of the image after reduction. Now, consider multiplying the pixels in the horizontal direction by n/m. Among m pixels in the horizontal direction, m-n are thinned out so that the thinned out pixels are most dispersed. Next, similar operations are performed on m pixels adjacent to the m pixels, and this is continued in the horizontal direction to obtain an image that is multiplied by n/m in the horizontal direction of the original image. (1)(2)(3)(4)-(m-
1) (m) shows the pixel before reduction, and as shown in FIG. 5, pixels (2) and (4) are thinned out.

Next, the case of enlargement will be explained. FIG. 6 shows the horizontal direction of pixels before enlargement, and FIG. 7 shows the horizontal direction of pixels after enlargement.
(m-1) (m) indicates a pixel before enlargement. When enlarging, instead of thinning out when reducing, it is enough to add.

As shown in FIG. 7, the pixel (2) may be doubled and the markings may be added.

Similar operations may be performed for vertical enlargement and reduction.

〔Effect of the invention〕

The image processing device of the present invention can perform thinning,
It has the advantage of being able to perform high-speed processing because it is scaled up and down by multiplying it. Furthermore, since the same means can be used for all magnifications, there is an advantage that it is not necessary to prepare tables corresponding to the magnifications in advance, which simplifies the process.

[Brief explanation of drawings]

1rXJ is a block diagram showing an image processing apparatus of the present invention; FIG. 2 is a block diagram showing an embodiment of the image processing apparatus of the present invention. FIG. 3 is a flowchart showing the operation of the image processing apparatus of the present invention. 4 to 7 are explanatory diagrams showing the principle of enlargement/reduction operation of the image processing apparatus of the present invention. 1... Image input means 2... Magnification input means 3... Image data storage means 4... Enlargement/reduction means 5... Image display means 6... Image scanner 7... CPU 8...・Keyboard 9...ROM 10...RAM 11...CRT

Claims (1)

[Scope of Claims] An image processing device comprising: an image input means for inputting image data as a digital signal for pixels; an image data storage means for storing the image data; and a magnification input means for inputting an enlargement/reduction ratio of the image data. , an enlargement/reduction means for enlarging or reducing the image data stored by the image data storage means by thinning or multiplying the image data based on the enlargement/reduction ratio input by the magnification input means; An image processing device comprising: image display means for displaying reduced image data.