A new watermarking algorithm for still image based on classification of image features is presented in this paper.

To obtain a better fusion effect of double wave band image,requires the research of image fusion arithmetic based on the analysis of the similarities and differences of the target radiation transmission feature、imaging trait and image characteristic in different wave bands.

The original image is divided into blocks,and several former Singular Values(SVs) are extracted from each block as the image characteristics,which are used to construct zero-watermark.

Frontal motion tracking based on image feature analysis;

Fragile watermarking for image authentication based on image feature and public key cryptography;

An approach of image feature representation that combines the multi-scale image decomposition technique and contour theory is proposed.

This paper describes in brief some interference factors in the application of geological radar to engineering exploration, makes an analysis of image characteristics of interference factors and causes for their formation,suggests some measures for suppressing these interference factors, and provides some basic data for the interpretation of geological radar data in engineering exploration.

Their B-scan ultrasound image characteristics were investigated in detail.

This paper describes the radiance-reflectance transformation method based on image characteristics to obtain the reflectance of oil polluted water.

Methods The feature imageries from Landsat ETM+ sensor were classified in the ERDAS IMAGINE 8.