Text detection in video frames plays a vital role in enhancing the performance of information extraction systems because the text in video frames helps in indexing and retrieving video efficiently and accurately. This paper presents a new method for arbitrarily-oriented text detection in video, based on dominant text pixel selection, text representatives and region growing. The method uses gradient pixel direction and magnitude corresponding to Sobel edge pixels of the input frame to obtain dominant text pixels. Edge components in the Sobel edge map corresponding to dominant text pixels are then extracted and we call them text representatives. We eliminate broken segments of each text representatives to get candidate text representatives. Then the perimeter of candidate text representatives grows along the text direction in the Sobel edge map to group the neighboring text components which we call word patches. The word patches are used for finding the direction of text lines and then the word patches are expanded in the same direction in the Sobel edge map to group the neighboring word patches and to restore missing text information. This results in extraction of arbitrarily-oriented text from the video frame. To evaluate the method, we considered arbitrarily-oriented data, non-horizontal data, horizontal data, Hua's data and ICDAR-2003 competition data (Camera images). The experimental results show that the proposed method outperforms the existing method in terms of recall and f-measure.
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机译:用于折叠标签的不干胶纸-是透明材料,具有两个彼此相邻的文本面板,并且在相对的侧面覆盖面板AB DE4211373C纸(1)具有两个部分(2a,2b)连接在一起,每个部分都被横向折叠分开将第(3)行插入到text(4a,4b)和cover(5a,5b)面板中。它是透明材料,各部分相互错开。文本面板彼此并排,而一个覆盖面板在其文本面板上方,另一覆盖面板在其下方。文本面板之间可以有一个固定凸耳,彼此对齐的部分从固定凸耳从相对的侧面伸出。每个面板的边缘附近可以有一个穿孔,在折叠位置上每个穿孔都在另一个穿孔之上。优点-文字可以抵抗液体,例如用于清洁。 AN 93328649 TI用于摄像机的视频图像闪烁减少系统-使用检测到的相移幅度来控制视频输出信号的可变放大器