Character and Line Figure Recognition in an Image

图像中的字符和线条识别

• 批准号: 10680404
• 负责人: TANAKA Naoki
• 金额: $ 1.92万
• 依托单位: KOBE UNIVERSITY OF MERCANTILE MARINE
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10680404/
• 关键词: Morphology; String Extraction; Line Figure Recognition; Image Processing; Pattern Recognition; Segmentation; モルフォロジイー; 文字引抽出; モルフォロジィー; 線図形の認識

The main purpose of this research is to develop a character and a line figure extraction methods applicable to various category of images. As character extraction methods, we have developed a character strings extraction method from magazine cover images and a telop extraction method from news video. The former is based on segmentation by the differential Top-hat operation, and we made effort to establishing the threshold by local histogram method and resolution of the competition between extracted character regions. The latter that is based on the morphological operation realized the detection of the telop frames and extraction the telop regions. For the line figure extraction, we have proposed a detection method of cracks and structural objects of the road surface image. An advantage of the method is its robustness against noise and vagueness of the objects. We have also made study on the parallel computing of the morphology operations and on the distributed constraint satisfaction.

本研究的主要目的是开发适用于各种类别图像的字符和线条图形提取方法。作为字符提取方法，我们开发了从杂志封面图像中提取字符串的方法和从新闻视频中提取字幕的方法。前者基于差分Top-hat操作的分割，并努力通过局部直方图方法建立阈值并解决提取的字符区域之间的竞争。后者基于形态学运算实现了字幕帧的检测和字幕区域的提取。对于线图提取，我们提出了路面图像裂缝和结构物体的检测方法。该方法的优点是其对噪声和对象模糊性的鲁棒性。我们还对形态学运算的并行计算和分布式约束满足进行了研究。

项目成果

平山勝敏: "分散制約充足におけるnogood学習の効果"人工知能学会誌. 15-2. 355-361 (2000)

Katsutoshi Hirayama：“不良学习对分布式约束满足的影响”人工智能学会杂志 15-2（2000 年）。

平山勝敏: "分散不完全制約充足問題"人工知能学会誌. Vol 14. 636-645 (1999)

Katsutoshi Hirayama：“分布式不完全约束满足问题”日本人工智能学会杂志第 14 卷 636-645（1999 年）。

MAEBA,Takashi: "Boolean Matrix Multiplication on a Processor with Separable Buses, with Applications to Some Graph Problem"Trans.IEICE. Vol.J82-A No.3. 487-491 (1999)

MAEBA，Takashi：“具有可分离总线的处理器上的布尔矩阵乘法，以及对某些图问题的应用”Trans.IEICE。

田中直樹: "ユニット付加によるBPネットワークの追加学習法"電子情報通電子情報通信学会論文誌DII分冊. J82-DII-4. 669-676 (1999)

Naoki Tanaka：“通过添加单元的 BP 网络的附加学习方法”IEICE Transactions DII Volume。

平山勝敏: "分散不完全制約充足問題"人工知能学会誌. 14-4. 636-645 (1999)

Katsutoshi Hirayama：“分布式不完全约束满足问题”人工智能学会杂志 14-4（1999）。