Smart camera

About: Smart camera is a research topic. Over the lifetime, 5571 publications have been published within this topic receiving 93054 citations. The topic is also known as: intelligent camera.

Voting-Based Motion Estimation for Real-Time Video Transmission in Networked Mobile Camera Systems

Abstract: In a video-based surveillance system, a mobile camera can provide dynamical and wider monitoring range and the video data transmitted from cooperative mobile cameras can be used to actively detect the objects of interest. However, it is a difficult task to accurately detect the moving objects from the image frames captured by the mobile cameras and the data flow of surveillance video from multiple cameras could be huge. The camera motion usually causes the shifting of static background as well as the moving objects in the captured image frames. In order to correctly estimate the motion of moving objects, a voting-based motion estimation algorithm is proposed to process the image frames captured by the mobile camera. Based on the estimation, a content-based video transmission mechanism is then implemented to further effectively decrease encoding cost and bandwidth utilization. The overall approach consists of voting-based motion estimation, moving object edges detection and content-based sampling coding at temporal and spatial scales. Without knowing the prior knowledge of camera motion, the motion estimation algorithm only utilizes the shifting information of edges of static background to estimate the camera movement. The shifting information is determined based on the voting decision of several representative regions of interest and the estimated motion is then used to compensate for the visual content obtained from the captured image frames. The proposed algorithms have been experimentally tested on several practical scenarios and it is demonstrated that, under limited network bandwidth, the transmitted image quality can be progressively achieved and the transmission bandwidth utilization can be effectively decreased.

Self-Aware and Self-Expressive Camera Networks

Abstract: Smart cameras perform on-board image analysis, adapt their algorithms to changes in their environment, and collaborate with other networked cameras to analyze the dynamic behavior of objects. A proposed computational framework adopts the concepts of self-awareness and self-expression to more efficiently manage the complex tradeoffs among performance, flexibility, resources, and reliability. The Web extra at http://youtu.be/NKe31_OKLz4 is a video demonstrating CamSim, a smart camera simulation tool, enables users to test self-adaptive and self-organizing smart-camera techniques without deploying a smart-camera network.

An Electronic Variable-Shutter System in Video Camera Use

Abstract: Since 1981 when we marketed world's first MOS color video camera,1) we have been continuously improving the performance of this line of video cameras. And in 1986 we have developed an MOS color video camera with high resolution, with high sensitivity, and without smear.2)

System and method for establising a documentation of working processes for display in an augmented reality system in particular in a production assembly service or maintenance enviroment

Abstract: The invention relates to a system and a method, which facilities the establishment of a documentation of working processes, said documentation using methods of augmented reality, particularly in the domain of production, installation, service or maintenance. The system contains at least one camera for recording image information during one or more working processes, tracking means for determining the position and orientation of the camera with regard to points in space, and contains a mobile computer for processing the image information recorded by the camera as well as the position and orientation of the camera, and for relaying the processed image information as image data as well as the position and orientation of the camera as tracking information to a remote computer system. This remote computer system comprises: processing means for generating information, which supplements the image data, in the form of graphic elements, texts and/or for referring to additional information and for assigning the supplemented information to points in space; first playback means for playing back the image data and the supplemented information, and; storage means for storing the information that supplements the image data and for assigning this information to points in space and to the tracking information serving as documentation of the working processes.

Method and system for custom closed-loop calibration of a digital camera

Abstract: A calibration system activates all or a majority of a display with the same value, such as with the same color. The camera is pointed at the display, but doesn't have to precisely pick up the whole display. The computer compares the pixel information received in the camera photosensor, and can store an appropriate correction factor. Not only does the user not have to precisely position the camera, jitter due to use hand movement is not a problem since this smoothes out the color information from the various pixels on the display, and actually improves the calibration. A target can be provided on the display to indicate if the user is properly pointing the camera at the display.