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Image Transmission Over ZigBee-Based Wireless Sensor Networks

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A common greenhouse application uses a small camera to monitor a particular plant of interest. Because of resource constraints in the sensor nodes, digital image transmission is a challenge for image-sensor-based wireless sensor networks (WSNs). A useful design and implementation of a wireless image sensor network with low costs, low power, and based on a low rate ZigBee protocol is presented. The WSN hardware platform and acquisition software use a simple best effort protocol to transmit JPEG images over a ZigBee network. However, image quality can be degraded by image distortion during transmission due to packet losses and poor link quality. A Canny edge detector algorithm is therefore used to recognize a distorted image, and then the system retransmits the image automatically. In the experiments, the recognition rate for identification of image distortion with mosaic blocks reached up to 90% using our proposed algorithm. Experimental results show that the performance of the WSN platform is reliable.
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Document Type: Research Article

Publication date: 2012-01-01

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  • The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
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