On the basis of AVHRR GIMMS NDVI and MODIS NDVI, we constructed monthly NDVI sequences covering Northeast China from 1982 to 2009 using a per-pixel unary linear regression model. The expanded NDVI passed the consistency check and were well used for analysis. The monthly NDVI trends were highly correlated with climatic changes. Spatially averaged NDVI in summer exhibited a downward trend with

We develop a theoretical basis for creating color histograms that are invariant under deformation or changes in viewpoint. The gradients in different color channels weight the influence of a pixel on the histogram so as to cancel out the changes induced by deformations. Experiments show these histograms to be invariant under a variety of distortions and changes in viewpoint.

In this paper we present view dependent information theory quality measures for pixel sampling and scene meshing in flatland. The measures are based on a definition for the mutual information of a line, and have a purely geometrical basis. Several algorithms exploiting them are presented and compare well with an existing one based on depth differences.

........................................................................................................iv Chapter 1: Introduction.......................................................................................1 Chapter 2: Background and Literature Review............................................................5 Chapter 2.1: Introduction to the Radial Basis Function Neural Network.......

In this paper we present a technique for fusion of optical and thermal face images based on image pixel fusion approach. Out of several factors, which affect face recognition performance in case of visual images, illumination changes are a significant factor that needs to be addressed. Thermal images are better in handling illumination conditions but not very consistent in capturing texture det...

Pattern recognition problem rely upon the features inherent in the pattern of images. Face detection and recognition is one of the challenging research areas in the field of computer vision. In this paper, we present a method to identify skin pixels from still and video images using skin color. Face regions are identified from this skin pixel region. Facial features such as eyes, nose and mouth...

In remote sensing, because of the wide diversity of image characteristics (size, spatial and radiometric resolution, terrain relief, observation poses, etc.), image registration methods that may work well on certain satellite images will not produce acceptable results for others, requiring more powerful techniques. A variety of registration techniques for images with non-rigid geometric differe...