The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
An edge detection CMOS image sensor employing global thresholding operation has been developed. A cyclic-line-access computation scheme has enabled seamless directional edge filtering in the row-parallel manner. The global thresholding algorithm adaptively determines the threshold value by taking the entire intensity distribution in the image into account and allows us to extract more significant...
A high-frame-rate dense motion vector field generation processor employing an efficient data manipulation scheme has been developed. The computation result of detecting a motion vector (MV) at each pixel location is reused in the adjacent location. As a result, the size of a best-match searching circuitry for MV detection has been reduced to 1/10 of that without data reuse. This allows us to implement...
This paper talks about a random impulse-noise detection scheme that was developed to be used as the first stage of a switching median filter. First by using an edge detector with a dynamic threshold, hidden artifacts are revealed by gradually changing the threshold of the edge detector. Then by applying a series of masks to the edge maps, the artifacts are pinpointed and tabulated. By analyzing the...
In this paper we propose a gesture perception algorithm using compact one-dimensional representation of spatio-temporal motion-field patches. At the learning stage, motion-field patches are randomly extracted and stored as templates. When generating feature vectors for video sequences, we compare stored templates with video, calculate maximum similarities and save those values as elements of feature...
Despite their enormous computational powers, digital computers today are inferior to humans in such tasks, like seeing events happening in front, perceiving and recognizing them by intuition and association, and making a decision to take an immediate action. It is very unlikely that computers will become intelligent as humans in this sense by just increasing the number of transistors on CPU chips...
Despite their enormous computational powers, digital computers today are inferior to humans in such tasks, like seeing events happening in front, perceiving and recognizing them by intuition and association, and making a decision to take an immediate action. It is very unlikely that computers will become intelligent as humans in this sense by just increasing the number of transistors on CPU chips...
A method to determine the parameters of directional motion blurring noise using edge detectors is developed in this paper. Once the parameters characterizing the blurring noise are known, the point spread function (PSF) of the blurring noise can be reconstructed and the noise subsequently eliminated. The algorithm uses an edge detector with dynamic thresholding to extract edge information from an...
A block-matching-based CMOS optical flow sensor architecture has been developed for real-time processing of moving images. In this architecture, an array of SIMD (single instruction multiple data) units calculate SAD (sum of absolute difference) values using only data from nearest-neighbor-units. As a result, it has become possible to carry out the block matching algorithm very efficiently with a...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.