Researches On Image Mosaic

At present, the wide field of vision, the high resolution image or the video frequency appear in some domains more and more importantly, for instance in the photogrammetry the panoramic view structure, this sprite technology of the video frequency code domain, the panoramic video frequency supervisory system realizes, specially in the virtual reality technology the hypothesized environment constructs and so on. Because the image mosaics technology has solved the field of vision and the resolution contradictory question, thus it has provided well the key to the situation for these domains essential technologies. Based on image mosaics technology this characteristic, it also more and more becomes an imagery processing domain hot spot research question.This article first detailed introduction image mosaics technology research present situation, characteristic and application domain, thus has demonstrated the image mosaics technology broad application prospect. Then introduced with emphasis in the image matching and the image fusion, analyzed and summarized their main method, the performance as well as the existence question. In this foundation, proposed one kind image mosaics method based on the phase correlation optimization, this method mainly aims at this limitation of which Richard Szeliski has proposed the movement 2-D space 8 parameters projections transformation model algorithm, uses the expansion phase correlation method to obtain the initial matching parameter value, then carries on the optimization using the L-M optimization algorithm to the initial parameter value but to obtain the more accurate matching parameter, thus has overcome the artificial determination initial parameter value question. In addition, in the research in view of the phase correlation method limitation, proposed one kind image mosaics method based on the interest points matching, this method firstly extracts the interest points using the Harris angle detector, and uses the comparison maximum value law to obtain the match characteristic point pair, thus realization image matching. Interest points match image mosaics method has overcome the phase correlation method shortcoming. The paper finally has mainly studied the panoramic image technology, discussed the cylinder panoramic image issue with emphasis, and proposes one kind of cylinder panoramic image mosaics solution.