JPH04160485A - Image reader - Google Patents

Abstract

PURPOSE:To represent a new pale-color image which is shaded off by thinning image data, read in by an image read means, with various dot pattern data. CONSTITUTION:An image is read in by the image read part 1 and its bit map(Bm) data are transferred to and stored in an image data storage part 2, which sends information of the size of the image data to an AND processing part 4. A pattern generation part 3, on the other hand, generates various Bm pattern data(Pd) having constant independent intervals and the processing part thins out the Bm data from the storage part 2 to generate image data, which is displayed on a display part 6 and printed at a print part 5. The image which is read is thinned out with the BmPd generated by the generation part 3d by plural Pds in the memory and selecting them. Consequently, the image data are processed with various BmPd to represent the new image pale-color image which is shaded off.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an image reading device that stores read image data as dot data.

BACKGROUND OF THE INVENTION Conventionally, this type of image reading device has been used as shown in FIGS.
As shown in B), it has a function to express the density of the dot size of black and white binary data in several gradations, and by setting the gradation, the image quality of the image itself can be preserved. It is configured to be able to express shades of light and shade depending on the state.

Problems to be Solved by the Invention However, in the conventional image reading device, the absolute number of the image data itself is stored, so even if the gradation of light and shade is changed (or lightened), the image data cannot be thinned out and blurred. There was a problem in that it was not possible to express images that were different from each other.

The present invention solves these conventional problems and is an excellent method that thins out image data in a certain pattern and can express blurred images that cannot be expressed with conventional image devices. The purpose is to provide an image reading device.

Means for Solving the Problems In order to achieve the above object, the present invention provides means for reading an image, means for storing the read image data, and generating dot pattern data that is thinned out at certain intervals. and means to perform AND' processing of the image data and the generated dot pattern data.

Therefore, according to the present invention, by thinning out the image data read by the image reading means using various dot pattern data, it is possible to express a pale image that could not be expressed by conventional image processing.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, 1 is an image reading section, 2 is an image data storage section, 3 is a pattern generation section, 4 is an AND processing section, 5 is a printing section, and 6 is a display section.

Next, the operation of the above embodiment will be explained. First, the image reading section 1 reads an image, and as shown in FIG. 2(A), the read bitmap data is transferred to the image data storage section 2 and stored therein. The image data storage section 2 provides the AND processing section 4 with information on the size of the read image data. On the other hand, the pattern generation section 3 generates various bitmap pattern data at certain regular intervals, as shown in FIG. 2(B), which is independent of the image reading section 3. FIG. 2 (A) sent from the image data storage unit 2
The bitmap data shown in FIG. 2 is thinned out in the AND processing section 4 using the bitmap pattern data shown in FIG.
The image data shown in C) is generated and displayed on the display unit 6 and printed by the printing unit 5.

As shown in Fig. 3, the bitmap pattern data generated by the pattern generation unit 3 is created by incorporating some pattern data into the memory in advance, and selecting and reading one of the patterns from among them. Performs thinning processing on the image.

FIG. 4(A) shows an image read by a normal image reading device, and when this image is thinned out using bitmap pattern data using the method described above,
Images like those shown in FIGS. 4(B) and (C) will be obtained.

According to the second embodiment, by performing thinning processing using various bitmap pattern data, it is possible to express images that could not be expressed by conventional image reading devices.

Effects of the Invention As is clear from the embodiments described above, the present invention performs image data thinning processing by ANDing a read image and pattern data at regular intervals. It has the advantage of being able to express pale images that were not previously available.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an image reading device according to an embodiment of the present invention, and FIGS. 2(A) and (B). (C) is a diagram showing an example of an image at each processing stage in the same device, FIG. 3 is a diagram showing various patterns in the pattern generation section of the same device, and FIG. 4 (A). 5(B) and 5'(C) are diagrams showing examples of images before and after thinning processing in the same device, and FIGS. 5(A) and 5(B) are diagrams showing examples of images in a conventional image reading device. 1... Image reading unit, 2... Image data storage unit,
3... Pattern generation section, 4... AND processing section, 5.
...Printing section, 6...Display section. Name of agent Patent attorney Masahiro Kura Go Figure 1 Figure 2 (A) (B) (C) Figure 3 (B) (C)

Claims (1)

[Claims] A means for reading an image, a means for storing the read image data, a means for generating dot pattern data to be thinned out at a certain interval, and a means for performing AND processing of the image data and the generated dot pattern data. An image reading device equipped with