Performance Evaluation of Transmitting Images to a PDA through a Wireless Network

This paper presents the performance of transmitting images from a desktop computer to a PDA through a wireless network. Raw images were captured by a digital camera. These raw images were sub-sampled by a frame grabber or compressed in JPEG format by software before sending to the PDA. We implemented the hardware with an FPGA for sub-sampling. For generating a diverse image test bucket for compression we implemented some commonly used filters such as an average filter and median filter in the hardware. The filters affected the size of the compressed images in the JPEG format. The results show that image compression and image sub-sampling improve the performance in the transmission of images