Shape recognition using grammatical structure in .NET Printer Code 39 Full ASCII in .NET Shape recognition using grammatical structure

How to generate, print barcode using .NET, Java sdk library control with example project source code free download:
16.3 Shape recognition using grammatical structure using .net vs 2010 tobuild code 39 on web,windows application POSTNET 0 0,7 6 6, visual .net Code 3 of 9 7 7 6,7 1 1 1,2 1,2 0 1,2. Fig. 16.8.

State diagram for the nondeterministic FSM that recognizes strings generated by the regular expression above. Two numbers separated by a comma denote that either input will cause this transition. Any other input will cause a transition to an error state which is not shown.

. In this ex barcode 3 of 9 for .NET ample, we illustrate how a boundary segment may be represented by a chain code, and how a possibly in nite number of similar boundary segments may be recognized by the same machine. There are many ways to represent images as strings other than chain codes, including for example the curve code [16.

4, 16.8]..

Type 2 grammars Although t barcode 3 of 9 for .NET ype 3 grammars provide simple implementations as simple nite state machines, which can be built using only ip- ops and combinational logic, they do not have suf cient generality to solve many problems. In some applications, other types of grammars may be more appropriate.

In this subsection we present two examples of shape recognition using type 2 grammars.. Recognition of chromosomes The follow 39 barcode for .NET ing example is abstracted from the text by Gonzalez and Thomason [16.6], based originally upon the work of Ledley et al.

[16.9], and illustrates the use of a context-free grammar to recognize types of chromosomes. The terminals in this grammar are boundary segments, denoted by a, b, c, d, and e, and illustrated in Fig.

16.9. In the recognition setting, these might be called boundary primitives.

A chromosome will be described by a sequence of symbols a e. Note that. a b c d e Fig. 16.9.

Visual Studio .NET barcode code39 Primitive boundary segments used for syntactic pattern recognition. Note that segment size and direction are important.

. Syntactic pattern recognition a b d a b d b b b b a Fig. 16.10 .

(a) A submedian chromosome. (b) A telocentric chromosome. (Redrawn from [16.

6].). Table 16.6. Productions to generate images of chromosomes. Submedian S S1 A A B C D E B C > > > > > > > > > > S1 AA CA DE bB Cb Db cD e d Telocentric S> S2 A A B C D F C D > > > > > > > > > > S2 BA AC FD Bb bC bD Dc b a. except for Code 39 for .NET the symbol d, which can appear either way, the symbols have associated directions. There are two types of chromosomes recognized by this grammar, telocentric and submedian, as illustrated in Fig.

16.10. Each may be described by a sequence of boundary segments.

The following grammar (Table 16.6) will generate either type of chromosome. These productions were not invented without some thought.

The rst two productions, those involving the start symbol, S, control which type of chromosome image is being generated: S1 denotes a submedian chromosome, and S2 designates a telocentric chromosome. In addition, the other symbols connote components of the chromosome boundary. That is, A will result in generation of armpair, B will result in generation of bottom, C will result in generation of side, D will result in generation of arm, E will result in generation of rightside, F will result in generation of leftside.

. 16.3 Shape recognition using grammatical structure Fig. 16.11 USS Code 39 for .

NET . Two of the productions used to generate a hexagonal texture. (Redrawn from [9.

2].). Shape grammars Finally on Code 39 Extended for .NET e last example from [9.2] makes use of shape grammars [17.

57] to generate and recognize textures. In a shape grammar, both the set of terminal symbols, VT , and the set of nonterminal symbols, VN , are sets of shapes, with the restriction that VT VN = . In this example, the set of terminals contains only one element, a hexagon:.

The set of nonterminals likewise contains a single element, a dot: The productions describe how to expand nonterminals, which are in the context of terminals, into additional shapes. For example, a single dot in the context of a hexagon might be against one speci c side of the hexagon, and the production could allow replication of the hexagon at the point where the dot occurs. Many such rules make up the grammar, as illustrated by only two rules in Fig.

16.11. Olstad and Torp [16.

10] make use of syntactic methods to extend the capabilities of active contour methods one of very few recent papers which make use of these methods in imaging to distinguish occlusions..
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