Mitsubishi Electric

About: Mitsubishi Electric is a company organization based out in Ratingen, Germany. It is known for research contribution in the topics: Signal & Voltage. The organization has 23024 authors who have published 27591 publications receiving 255671 citations. The organization is also known as: Mitsubishi Electric Corporation & Mitsubishi Denki K.K..

Hand held computer control device

Abstract: A compact convenient hand-held, accelerometer-based computer control devices utilized to control on-screen animated characters presented by a computer-driven display in which the movement, persona, or style of the character is controlled through movement of the device in a predetermined pattern which results in recognizable patterns of accelerations that are detected to give the on-screen character a particular persona or style determined by the user. Thus, the system requires only a series of easily learned hand movement patterns for corresponding character control. In an alternative embodiment, once a movement has been determined, the style or emotional content of the movement is specified directly from gross accelerometer output without pattern matching. In another embodiment, the outputs of two or more accelerometers are combined, with the combined waveforms constituting a language for graphical object control. In a still further embodiment, one or more patterns are detected serially as a language to direct the appropriate movement or persona for the character or icon presented on-screen. In yet another embodiment, accelerations are normalized to the local gravitational field such that the orientation of the control device is irrelevant. In an additional embodiment, since the location of the on-screen character is known, the character may be given incremental motions from this location by moving the device in the direction of the intended incremental motion, thus to direct the motion of the character in the same direction as the hand movement.

A new method for known plaintext attack of FEAL cipher

Abstract: We propose a new known plaintext attack of FEAL cipher. Our method differs from previous statistical ones in point of deriving the extended key in definite way. As a result, it is possible to break FEAL-4 with 5 known plaintexts and FEAL-6 with 100 known plaintexts respectively. Moreover, we show a method to break FEAL-8 with 215 known plaintexts faster than an exhaustive search.

Computer vision for computer games

Abstract: The appeal of computer games may be enhanced by vision-based user inputs. The high speed and low cost requirements for near-term, mass-market game applications make system design challenging. The response time of the vision interface should be less than a video frame time and the interface should cost less than $50 U.S. We meet these constraints with algorithms tailored to particular hardware. We have developed a special detector, called the artificial retina chip, which allows for fast, on-chip image processing. We describe two algorithms, based on image moments and orientation histograms, which exploit the capabilities of the chip to provide interactive response to the player's hand or body positions at 10 msec frame time and at low-cost. We show several possible game interactions.

Background subtraction based on cooccurrence of image variations

Abstract: This paper presents a novel background subtraction method for detecting foreground objects in dynamic scenes involving swaying trees and fluttering flags. Most methods proposed so far adjust the permissible range of the background image variations according to the training samples of background images. Thus, the detection sensitivity decreases at those pixels having wide permissible ranges. If we can narrow the ranges by analyzing input images, the detection sensitivity can be improved. For this narrowing, we employ the property that image variations at neighboring image blocks have strong correlation, also known as "cooccurrence". This approach is essentially different from chronological background image updating or morphological postprocessing. Experimental results for real images demonstrate the effectiveness of our method.