8 research outputs found
Generic typology for irrigation systems operation
Irrigation management / Irrigation systems / Water use efficiency / Canals / Operations / Typology / Water delivery / Water distribution / Water conveyance / Water storage / Irrigation effects / Environmental effects / Gravity flow / Hydraulics / Constraints / Water supply / Networks / Case studies / Sri Lanka
Proceedings of the National Conference on Water, Food Security and Climate Change in Sri Lanka, BMICH, Colombo, Sri Lanka, 9-11 June 2009. Vol. 1. Irrigation for food security
Food security / Climate change / River basins / Water shortage / Irrigated farming / Water quality / Tanks / Aquatic plants / Rice / Food insecurity / Water resource management / Zero tillage / Weed control / Agroforestry / Canals / Surface runoff / Remote sensing / Sri Lanka
Cloud motion tracking for short-term on-site cloud coverage prediction
A technique for cloud motion tracking and cloud motion prediction using ground-based sky images is presented. This cloud motion prediction technique primarily targets irradiance prediction as an application in Electrical Engineering. A sequence of whole sky images is processed to determine the time taken by clouds to reach the sun position on the image. Cross-correlation technique was used to track individual clouds from one image frame to next frame. Using Harris features detection algorithm cloud features were found and the deformation vectors were produced. To find the velocity vectors of each feature points Lukas-Kanade optical flow algorithm is proposed. Using the optical flow algorithm, 3 min ahead cloud position was estimated
Dynamic Sparse Sampling for Confocal Raman Microscopy
The
total number of data points required for image generation in
Raman microscopy was greatly reduced using sparse sampling strategies,
in which the preceding set of measurements informed the next most
information-rich sampling location. Using this approach, chemical
images of pharmaceutical materials were obtained with >99% accuracy
from 15.8% sampling, representing an ∼6-fold reduction in measurement
time relative to full field of view rastering with comparable image
quality. This supervised learning approach to dynamic sampling (SLADS)
has the distinct advantage of being directly compatible with standard
confocal Raman instrumentation. Furthermore, SLADS is not limited
to Raman imaging, potentially providing time-savings in image reconstruction
whenever the single-pixel measurement time is the limiting factor
in image generation