Aimed at the problem how to detect the circular region and determine the parameters of circular in the digital image, two ways of the current common round recognition methods are introduced—one is based on the Hough transform, and the other is on the geometric characteristics. A fundamental theory of determining the radius and the center of the circle by scanning and counting the number of pixe...

method gives satisfactory results. Finding peaks is a more difficult task in the radius histogram in the two-stage This paper presents a circle-finding method to deal with partially occluded circles using segmented contours. Contours Hough transform [3, 4], which is sensitive to inaccuracy in are segmented using a criterion based on the derivative of the the first stage. A particular deficiency...

In this project, presented an computational automated method for solving the game “connect the dots” based on Connected-component labeling, correlation coefficient and circular Hough transform . the framework will also paint the different Connected-Regions in output image in random colors using Connected-component labeling.

An approach was developed for the automatic extraction of the rectangular and circular shaped buildings from high resolution satellite imagery using Hough transform. First, the candidate building patches are detected from the imagery using the binary Support Vector Machines (SVM) classification technique. In addition to original image bands, the bands NDVI (Normalized Difference Vegetation Inde...

In this study we discuss about the method to detect the object from the complex background. Object detection and recognition in noisy and cluttered images is a challenging problem in computer vision. The goal of this project is to detect the object using few methods such as color processing and shape detection. Colour processing uses thresholding operation to eliminate the unrelated colour or o...

In this work, we present a fingertip tracking framework which allows observation of finger movements in task space. By applying a multi-scale edge extraction technique, an edge map is generated in which low contrast edges are preserved while noise is suppressed. Based on circular image features, determined from the map using Hough transform, the fingertips are accurately tracked by combining a ...

In this article, an asynchronous array architecture for straight line Hough Transform (HT) is proposed using a scaling free modified CORDIC (CoOrdinate Rotation Digital Computer) unit as a basic Processing Element (PE). It exhibits four-fold angle parallelism by dividing the Hough space into four subspaces to reduce the computation burden to 25% of the conventional requirements. A distributed a...

In this paper, two circular shape extraction methods based on C A M (Content Addressable M e m o y ) concept are proposed. The first method based on Hough Transform uses only the gradient amplitude infonnation, while the second uses in addition preselected gradient direction to estimate the center coordinates of the circle and then apply the H T circle extraction to extract i t 's mdius. The ad...

In this paper, the reassigned local polynomial periodogram along the frequency direction (RfLPP) is shown to be able to perfectly localize the chirp signal. Due to this property, the RfLPP is combined with the Hough transform for chirp signal detection in the parameter domain. Simulations of the RfLPP-Hough transform are given for chirp signal detection in white Gaussian noise and impulsive noi...