This report aims to present the random noise elimination of image based on edge preservation. This solution is a pixel processing using 29 templates. Each template consists of the considered pixel and its neighbor pixels. To eliminate noises the smoothing process replaces the new pixel intensity into the same considered processing pixel by the mean intensity of neighbor pixels. The condition of the template selection is based on the minimum variance of templates. As the experimental results this solution brings the peak signal-to-noise ratio (PSNR) higher than Gaussian filter Tomita’s marks Fukuda’s marks and Nagao’s marks and also gains contrast difference.

Department of drainage and sewerage (DDS) has realised in the flooding in Bangkok. Despite these issues the flood control centre has been established for water level monitoring as well as solving its issue in case of the water level in canal over-leveled using supervisory control and data acquisition (SCADA) technology in order to control the pumping station located throughout Bangkok. This regulation system is mainly categorised into two systems: Field Server and Canal Regulation. Consequently this article presents on Novel Water Level Sensing for the Canals in Bangkok with the advantage and disadvantage analysis in the informative-acquiring pattern from instruments together with the limitations of operation for improving measurement more precise reliable and most efficient.