CN1262558A

CN1262558A - 4-bit image encode method

Info

Publication number: CN1262558A
Application number: CN 99100594
Authority: CN
Inventors: 冯桂玉; 马培伦; 赵纯志; 马宗华; 马宝华
Original assignee: 冯桂玉
Priority date: 1999-02-05
Filing date: 1999-02-05
Publication date: 2000-08-09

Abstract

A 4-position graphic encode method for expressing numerals features that in predefined rectangles which have been divided into 4 or 2 parts or not, two geometries (rectangle or triangle) are used to fill them in the sequence of upper, lower, left and right by splicing, supplementing, shifting, conversion and addition, or defining 0 and 1 to express 10 numerals 0-9, and the used part (s) are blackened. Its advantages are the minimal number of setting-up positions, clearness, and easy recognition with machine.

Description

4-bit image encode method

The present invention is a kind of numeral image encode method, and title is a 4-bit image encode method, belongs to the computer Recognition applied technical field.

Relevant patented technology is: the disclosed CN1151542 of Patent Office of the People's Republic of China ink block digital coding method and coding sheet thereof, it is characterized in that in prefabricated square nine palace lattice, order with nine positions is set, represent ten numerals of 0-9 respectively with being coated with the China ink demonstration, this method is because figure place is many, and point is less, figure sign indicating number for little shape, not only hand-written difficulty, order is examined difficult, and machine-readable recognition system is very uneconomical yet.Encoding of graphs that another disclosed CN1172981 is writable and recognition methods thereof is characterized in that prefabricated Set six positions on the shape skeleton, hand-written straight line is represented ten numerals of 0-9 respectively, and this method essence is similar six palace lattice, and the figure place of setting is also more, writes fast to be difficult for standard criterion, and machine-readable recognition system is yet very uneconomical.We yet are not to set the minimum encoding of graphs of figure place in the seven-piece abacus-initating encoding of graphs of application on December 4th, 1998.

Neoteric purpose is, a kind of minimum encoding of graphs of figure place of setting is created in research, can represent ten numerals of 0-9 respectively by certain method, and for the figure sign indicating number of little shape, not only hand-written easily order is examined easily, machine-readable in the scanner of common, inexpensive also can be correct typing identification.

Technical scheme of the present invention is, according to 2 ³=8 and 2 ⁴=16 calculate, setting four is to show the minimum setting figure place of representing ten numerals of 0-9 with black-and-white two color.In view of the above, in prefabricated rectangle four palaces, two palaces or palace lattice, with rectangle or two kinds of geometric figures of triangle, order by upper and lower, left and right is set four positions, correspondingly with the settings such as binary system of pattern conjunction, complementation, displacement, conversion, number figure addition or 0,1 liang of element, represent ten numerals of 0-9 respectively again with being coated with the China ink demonstration.Total following offshoot program:

One, in prefabricated rectangle four palace lattice

(1) with the rectangle geometric figure

1, matrix pattern is arranged

1. pattern conjunction: the order by upper and lower, left and

right sets

1,2,3,4, and each sets 5,6,7,8 in regular turn with two adjacent palace trrellis diagram shape amalgamations in twos again, with being coated with black demonstration, is not painted with 0, and full coat is 9, sees Fig. 1;

2. figure complementation: set 1,2,3,4 by the order of upper and lower, left and right, set 5,6,7,8 in regular turn with its complementary figure again, with being coated with black demonstration, 0 is not coated with, and 9 full coats are seen Fig. 2;

3. count the figure additions: the order by upper and lower, left and

right sets

1,2,3,4, set 5,6,7,8 with the additions of four numbers and the amalgamation of respective graphical again, and with being coated with black demonstration, 0 is not coated with, and 9 full coats are seen Fig. 3;

4. the binary system of 0,1 liang of element: the order by upper and lower, left and right is set four, and its representation is, 0000 is 0,0001 to be 1,0002 to be 2,0011 is 3,0100 to be 4,0101 to be 5,0110 to be 6,0111 to be 7,1000 is 8,1001 to be 9,1 to be coated with China ink, and 0 is not coated with, and sees Fig. 4;

2,

(or ) the shape arrangement

Can realize four kinds of method for expressing that matrix pattern is arranged equally, for example 4. an () .1. sees Fig. 5;

(2) with triangle

1,

Shape is arranged

Can realize four kinds of method for expressing of field word equally, for example 1. an () .1. sees Fig. 6;

2,

Shape is arranged

Aforementioned four kinds of method for expressing can be arranged equally, and for example 2. an () .1. sees Fig. 7;

Two, in prefabricated rectangle two palace lattice

The figure displacement earlier with leg-of-mutton a kind of aligning method in four, is set

expression

1,2,3,4 in order, represents 5,6,7,8 respectively with moving of position again, and with being coated with the China ink demonstration, 0 is not coated with, 9 full coats.See Fig. 8;

Three, in prefabricated rectangle one palace lattice

Graph transformation that is: earlier with 1/2 interior rectangle, is represented l, 2,3,4 respectively by the order of upper and lower, left and right, represents 5,6,7,8 respectively with the interior triangle of l/2 again, shows that to be coated with China ink 0 is not coated with, 9 full coats.See Fig. 9;

In addition, 4-bit image encode method also can embody in prefabricated rectangle three palace lattice, set up when promptly being coated with China ink in the palace therein, or flexible in the figure of 8,9 two numerals of expression; Also have, the permutation and combination of four palace lattice and three palaces group also can change into and be prefabricated into 7 fonts.More than, see Figure 10;

In a word, this programme is because to set figure place minimum, and therefore, it is big, in sharp contrast to have a few and black piece of figure code-point number, easily writes easy knowledge, simple and clear characteristics, especially an () .1. 2., second and the C grade method the most outstanding.Therefore, typing and identification that machine-readable middle cheap scanner also can be correct, thereby, reached the purpose of inventing.

Statistician and the limited field of economic bearing that four bit pattern coding is suitable for having certain quality, as the computer application of educational system, not only can be used for educational statistics, also can replace existing OM numeral to be coated with the method for the use of ink and water, transformation apparatus Card Reader and college entrance examination are appraised etc., will save the man power and material greatly.

Claims

1, a kind of numeral image encode method, it is 4-bit image encode method, it is characterized in that: in four palaces, two palaces or palace lattice of prefabricated rectangle, with rectangle or two kinds of geometric figures of triangle, order by upper and lower, left and right is set four positions, correspondingly press pattern conjunction, complementation, displacement, conversion, number figure addition again or, represent ten numerals of 0-9 respectively with being coated with the China ink demonstration with the settings such as binary system of 0,1 liang of element.

2, according to claim 1, set four positions and the corresponding feature of setting of replenishing, also can in prefabricated rectangle three palace lattice, by this setting, represent ten numerals of 0-9 respectively equally with being coated with China ink.

3, according to right 1 or 2, four method features of setting and replenishing setting, wherein prefabricated rectangle four palace lattice and three palace lattice also can make prefabricated 7 fonts, four palace lattice and three palace lattice into, also can show with being coated with China ink as stated above, represent ten numerals of 0-9 respectively.

4, according to claim 1,2 or 3 described, with being coated with the method that China ink shows, promptly black and white demonstration, same available any two kinds of clearly demarcated colours of aberration are shown.