Fast Reflectional Symmetry Detection Using Orientation Histograms
نویسندگان
چکیده
simple and fast reflectional symmetry detection algorithm has been developed in this Apaper. The algorithm employs only the original gray scale image and the gradient information of the image, and it is able to detect multiple reflectional symmetry axes of an object in the image. The directions of the symmetry axes are obtained from the gradient orientation histogram of the input gray scale image by using the Fourier method. Both synthetic and real images have been tested using the proposed algorithm.
منابع مشابه
Fast Global Reflectional Symmetry Detection for Robotic Grasping and Visual Tracking
Many objects found in domestic environments are symmetrical. In this paper, a novel method to detect axis of reflectional symmetry in digital images is presented. The proposed approach utilizes image gradients and edge pixel matching to find lines of symmetry. Preliminary results, comparing the symmetry detector with the Generalized Symmetry Transform [Reisfeld et al., 1995] is provided.
متن کاملGlobal Bilateral Symmetry Detection Using Multiscale Mirror Histograms
In recent years, there has been renewed interest in bilateral symmetry detection in images. It consists in detecting the main bilateral symmetry axis inside artificial or natural images. State-of-the-art methods combine feature point detection, pairwise comparison and voting in Hough-like space. In spite of their good performance, they fail to give reliable results over challenging real-world a...
متن کاملBreaking the reflectional symmetry of interlimb coordination dynamics.
Interlimb rhythmic coordination is reflectionally symmetric when the left and right limb segments are identical in uncoupled frequencies and spatial orientation. In the present studies (4 experiments, with a total of 31 participants), when reflectional symmetry was broken through differences in timing (frequency), the resulting stable states were related by reflection and were identical for pai...
متن کاملConstraint relationship for reflectional symmetry and rotational symmetry
A novel theorem linking reflectional symmetry and rotational symmetry has been established in this paper. This theorem constrains that, for a rotationally symmetric image with K>1 fold(s) (K-RSI), its number of reflection-symmetric axes must be either K or zero. The novel constraint theorem provides the guidance for the procedure of symmetry detection. It has been demonstrated by the experiment...
متن کاملA Constraint Relationship for Reflectional Symmetry and Rotational Symmetry
A novel theorem linking reflectional symmetry and rotational symmetry has been established in this paper. This theorem constrains that, for a rotationally symmetric image with K ≥ 1 fold(s) (K-RSI), its number of reflection-symmetric axes must be either K or zero. The novel constraint theorem provides the guidance for the procedure of symmetry detection. It has been demonstrated by the experime...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Real-Time Imaging
دوره 5 شماره
صفحات -
تاریخ انتشار 1999