The paper presents the overview of location methods for model-based monocular vision from four aspects,which include location from point features,location from straight line features,location from high-lever features.

Through closely linear observation and line-feature tracking,the accuracy and efficiency were improved.

The algorithm based on block-matchning and algorithm based on line-feature are adopted to estimate the image motion.

As the edge of gun tube reflects clearly the inclination angle in the image sequences of gun firing,image matching location based on line-feature and slant of template amending is developed in this paper.

Subpixle location detecting of line feature in digital image;

For registering multi-sensor remote image automatically, a new kind of virtual point based on line feature is proposed as a basis of point features and control points.

As the seeker Field of View (FOV) is small and target distance is much bigger than target size, a monocular algorithm using characteristic lines to estimate target distance is developed based on the fact that the camera model can be described as weak perspective projection.

Application of line feature constraint in tracking measurement of continues casting slab;