F-Term-List

G06V30/00-30/12@Z;30/18-30/222;30/226-30/32;30/42;30/424

AA00
MEANS FOR READING OF CHARACTERS

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. Journals and documents

. License plates

. Instrumental panels and call meters

. Mail

. Articles

. Musical scores

. Combination with other devices

. . Facsimiles

. . Word processors

. Other means

AB00
CHARACTERS TO BE DISCRIMINATED

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. Description means

. . Printed characters

. . Handwritten characters

. . . Characters that have been input online

. . Characters with special shapes

. . . Dotted characters

. . . Segmented characters

. . . Relief and marking characters

. . . Characters relating to frames for description of characters

. . . Characters including code marks

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. . . Magnetic and electrostatic characters

. Types of characters

. . Alphabets and numerals

. . Japanese alphabets (i.e., kana)

. . . Japanese sonant marks (i.e., dakuon and handakuon)

. . Chinese characters

. . Codes and symbols

. . Uppercase and lowercase characters (i.e., small-size and large-size characters)

. Other characters to be discriminated

BA00
READING MECHANISMS AND CONTROL

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. Optical reading

. . Hand scanners

. Magnetic reading and electrostatic reading

. Reading by mechanical contact

. Reading by on-line input

. . Writing tables that detect coordinates of the location wherein a writing implement is brought into contact

. . Writing implements for detecting the stroke condition

. . Matrix sensing elements for tracking in sequence

. Other reading means

CA00
PREPROCESSING

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. Signal processing

. . Amplitude adjustment

. . Quantization

. Writing and reading of image memory

. Image processing

. . Correction of defective images

. . Alignment and positioning

. . Separation and extraction of reading areas

. . Noise detection and elimination

. . Processing of patterns and strokes

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. . . Normalization

. . . Smoothing and thinning of lines

. . . Shading and thickening of lines

. . . Compression and stretching

. . . Changes of resolution

DA00
CHARACTER DISCRIMINATION

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. Discrimination processes

. . Discrimination by a single discriminating operation

. . Discrimination by multiple discriminating operations

. . . Verification by extraction of dictionary data in sequence

. . . Verification in steps

. . . . Verification of raw data in comparison with precise data

. . . . Verification of partial patterns with the entire patterns

. . . . Combination of partial patterns

. . . . Verification of entire area with local areas

. . Use of multiple sets of discrimination devices

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. Dictionaries

. . Single sets of dictionaries

. . . Structures in stages

. . Multiple sets of dictionaries

. . . Main and subsidiary dictionaries

. . . Types of characters

. . . Classification by character fonts

. . . Classification by writers

. . Dictionaries that accommodate basic patterns

. . Dictionaries that accommodate deformation patterns

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. . . Dictionaries with pre-input deformation patterns

. . . Formation of deformation patterns during verification

. . Production of dictionaries

. . . Use of rejected character patterns

. . . Use of description samples

. . . Deformation of basic patterns

. . . Production by learning

. . Writing and reading of dictionary data

. . Selection of dictionaries

. . . Selection by operator command

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. . . Selection by additional information

. . . Selection by formats

. . . Selection by probabilities, the number of discriminated characters, and the frequency of character presence

. . . Selection by the level of similarity and difference in comparison with the previous stage

. . . Selection by analysis of input character patterns

DB00
CHARACTER DISCRIMINATION BY SUPERPOSITION

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. Optical superposition

. . Use of holograms

. Electrical superposition

. . Use of analog circuits

. . Use of digital circuits

. Superposition by computation

. . Use of correlation

. . Use of spatial frequency analysis

. Targets to be superpositioned

. . Surfaces and entire character

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. . Lines and segments of the character

. . Points, picture elements, and sampling points

. . Time relationships, amplitude, and waveforms

. Positioning with standard patterns

. . Linear movement

. . Rotation

. Deformation of standard patterns

. . Line width

. . Character size, height, and width

. . Distortion

DC00
CHARACTER DISCRIMINATION BY GEOMETRIC CHARACTERISTICS

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. Characteristics of targets to be extracted

. . Points

. . . Branching points, connection points, and intersections

. . . End points, refraction points, and projections

. . . Center of gravity, and the center

. . Strokes

. . . Direction and inclination

. . . Length

. . . Width

. . . Relative location

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. . Shapes

. . . Holes, loops, and closed paths

. . . Recesses and projections

. . . Outlines, neckings, and curves

. . Distance between strokes

. . Distance between character frames and strokes

. . Character frames

. . Circumscribed polygons

. . Strokes within the split areas

. . Shapes of partial patterns

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. . Stroke elements in the segment

. . . Patterns of the segment alone

. . . Connection and combination of segments that are adjacent to each other

. . Boundaries between strokes and the background, and variation points thereof

. . Picture elements

. . . Run length and sequential arrangement of picture elements

. . . Number of picture elements in the split areas and the area thereof

. . . Number of picture elements in each direction from target picture elements

. . Distance from characteristic points

. . Number of intersections between cutting line and strokes

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. . Presence and absence of spaces in each direction

. . Poles and extreme values

. Extraction methods

. . Use of scanning means

. . . Raster-scanning means

. . . Scanning means of m x m mesh masks

. . Use of histograms and projection means

. . Use of means for tracking of the outline

. . Use of m x m-splitting means

. . Use of labeling means and provision of codes

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. . Use of sondes

. . Use of counts

. . Use of means for setting of coordinate axes

. . Use of means for approximation of polygonal lines

. . Use of means for setting of threshold values

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CHARACTER DISCRIMINATION BY ON-LINE INPUT

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. Factors to be detected

. . Writing state

. . . Touching and release of strokes

. . . Stroke pressure

. . . Stroke speed

. . Strokes

. . . Number of strokes

. . . Forms

. . . . Approximation of polygonal lines and circular arcs

. . . Stroke order

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. . . Relative location

. . . Direction and change points of direction

. . . Length and distance between characteristic points

. . Characteristic points

. Discrimination means

. . Discrimination after inputting a single character

. . Discrimination during inputting of descriptions

. . . Discrimination per partial and collective patterns

. . Use of superposition means

. . Use of means for verification characteristic patterns

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POST-TREATMENTS

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. Detection of incorrect discriminations and rejects

. . Detection by means of contrasting with input patterns using visual observation

. . . Enabling of direct vision of input patterns

. . . Optical indication of input patterns

. . . Electrical indication of input patterns

. . . . Enabling of indication of variable density

. . Use of computation means

. . . Similarities and differences

. Modification and determination

. . Modification and determination by commands from the operators

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. . . Inputting of correct answers

. . . Selection from prospective characters to be discriminated

. . . Means for command, input, and selection

. . . . Keyboards

. . . . Cursors

. . . . Command mechanisms (i.e., input using light pens and by finger touch)

. . . . Redescribed characters and characters in the spare areas

. . Modification and determination by analysis of character arrangement

. . . Words

. . . Sentence structures and grammars

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. . Modification and determination by relation to other information

. . . Input by reading

. . . . Japanese phonetic syllabaries that are located at the side of ideographs

. . . . Voice input

. . . Codes

. . Modification and determination by conjecture from other information

. . . Described location and formats

. . . Number of strokes and the character size

. . Modification and determination by reading multiple times and by the discrimination results

. . . Determination by majority

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. . . Priority orders

. . . Presence frequency

. . . Reading and discrimination at identical conditions

. . . Reading and discrimination at various conditions

. . . . Reading direction and imaging direction

. . . . Reading location and extraction location

. . . . Resolution

. . . . Threshold values of quantization

. . . Various means for discrimination

FA00
OTHERS

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. Indication of the discrimination results

. . Indication contents

. . . Single prospective characters for discrimination

. . . Multiple prospective characters for discrimination

. . . Accommodation with input patterns

. . . Indication of characters immediately before and after the characters to be discriminated as well

. . . . Indication of the format

. Indication of rejections and warning and alarm therefor

. . Indication of rejected characters and locations by highlighting means

. . . Change of luminosity and color

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. . Indication of input patterns in place of the discrimination result

. Discrimination means

. . Display

. . . Elements that are indicated by light emission

. . Printing

. . Voice

. Output means

. . Transmission

. Checking of abnormalities

5B064	CHARACTER DISCRIMINATION
	G06K9/00 -9/62;G06V30/00-30/12@Z;30/18-30/222;30/226-30/32;30/42-30/424