The effect of sampling step on the resolution of ultrasonic C-scan image was studied, and an edge adaptive image interpolation method based on the local covariance feature was presented to improve the C-scan image resolution.

In view of the application of onboard video image in the battle field,the special qualification to image resolution and frame rate is analyzed as onboard image is compressed.

Total least squares based high-resolution image reconstruction algorithm;

In order to improve the resolution of the reconstructed image under existing circumstance,a method for reconstructing high resolution image using low resolution projection data acquired by shifting the detector is presented.

First it enhances respectively low frequency of multi spectral image and high frequency of high resolution image through wavelet transform.

On the base of the analysis of single image super-resolution reconstruction, the paper builds a new image degenerating model and discusses the similarities and differences between the proposed model and classic image restoration model, and then analyzes the algorithm implementation steps.

On the basis of Har ri s theory of image super-resolution,the inconsistency in the traditional theory of image super-resolution is analyzed and the model of image formation is impr oved.