HISTORICAL REVIEW OF OCR RESEARCH-AND-DEVELOPMENT

被引:428
作者
MORI, S
SUEN, CY
YAMAMOTO, K
机构
[1] CONCORDIA UNIV, DEPT COMP SCI, MONTREAL H3G 1M8, QUEBEC, CANADA
[2] MINIST INT TRADE & IND, ELECTROTECH LAB, IMAGE PROC SECT, TSUKUBA SCI CITY, IBARAKI 305, JAPAN
基金
加拿大自然科学与工程研究理事会;
关键词
OPTICAL CHARACTER RECOGNITION; FEATURE EXTRACTION; TEMPLATE MATCHING; STRUCTURAL ANALYSIS; LEARNING; CHINESE CHARACTER RECOGNITION; PRACTICAL OCR SYSTEMS;
D O I
10.1109/5.156468
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper research and development of OCR systems are considered from a historical point of view. The paper is mainly divided into two parts: the research and development of OCR systems, and the historical development of commercial OCR's. The R&D part is further divided into two approaches: template matching and structure analysis. It has been shown that both approaches are coming closer and closer to each other and it seems they tend to merge into one big stream. On the other hand, commercial products can be classified into three generations, for each of which some representative OCR systems are chosen and described in some detail. Some comments on recent techniques applied to OCR such as expert systems, neural networks, and some open problems are also raised in this paper. Finally we present our views and hopes on future trends in this fascinating area.
引用
收藏
页码:1029 / 1058
页数:30
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