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.

Distributed Multilevel Data Fusion for Networked Embedded Systems

Abstract: Recently much research has been conducted in visual sensor networks. Compared to traditional sensor networks, vision networks differ in various aspects such as the amount of data to be processed and transmitted, the requirements on quality-of-service, and the level of collaboration among the sensor nodes. This paper deals with sensor fusion on visual sensor networks. We focus here on methods for fusing data from various distributed sensors and present a generic framework for fusion on embedded sensor nodes. This paper extends our previous work on distributed smart cameras and presents our approach toward the transformation of smart cameras into a distributed, embedded multisensor network. Our generic fusion model has been completely implemented on a distributed embedded system. It provides a middleware which supports automatic mapping of our fusion model to the target hardware. This middleware features dynamic reconfiguration to support modification of the fusion application at runtime without loss of sensor data. The feasibility and reusability of the I-SENSE concept is demonstrated with experimental results of two case studies: vehicle classification and bulk good separation. Qualitative and quantitative benefits of multilevel information fusion are outlined in this article.

Multi-camera Control through Constraint Satisfaction for Persistent Surveillance

Abstract: We introduce a distributed camera coalition formation scheme for perceptive scene coverage and persistent surveillance by smart camera sensor networks. The proposed model supports task-dependent camera selection and grouping via a "contract net" task allocation protocol augmented with conflict resolution and error recovery mechanisms. Our technique avoids any central controller, and it is robust to node failures and imperfect communication. In the design and empirical evaluation of our camera networks, we exploit a visually and behaviorally realistic virtual environment simulator that is populated by autonomous, lifelike virtual pedestrians.

8K Extremely-High-Resolution Camera Systems

Abstract: Research and development of ultrahigh-definition imaging systems that go beyond high-definition television (HDTV) have converged in the field of “4K” and “8K” imaging systems. The 4K imaging systems are used for digital cinema, while the 8K systems have been developed for use in next-generation TV broadcasting systems. The latter at 60 frames/s represents the highest pixel count and frame rate of any system, which includes their transmission design. In this paper, we will present an overview of two “8K” camera systems. One achieves a full resolution of 8K using three 33-Mpixel image sensors. The other is a more compact and practical camera system that uses four 8-Mpixel image sensors. We will also describe the camera functions, evaluation results, and views for future developments.

A vision sensor having an expanded dynamic range for autonomous vehicles

Abstract: Insufficiency of dynamic range of conventional video cameras is an important problem in realizing a robust vision system for autonomous vehicles because road scenes have a very wide dynamic range of brightness. To solve the problem, a method for expanding the dynamic range of video cameras by combining the images taken under different exposure conditions has been developed. Using this method, an experimental vision sensor with a wide dynamic range has been manufactured. The developed sensor has a dynamic range of 10 000, which is approximately 30 times as wide as that of a conventional video camera. The effectiveness of the developed vision sensor in comparison with a conventional video camera was confirmed from the experiments on a highway under various lighting conditions.