An interlining removal method and device based on motion detection

Abstract

The invention provides an interlacing eliminating means based on motion detection, including: calculate the field difference, determine the still area and moving area according to the correlation between the preset detection threshold value and the field difference, for the reference field, use the original data thereof as output data, for non reference field, output the original data thereof for the still area, for the moving area, use the graded side auto-adapted filtering means to conduct interpolation, output the interpolation results, combine the output of the reference field and the non reference field into a line-by-line output image, and output the line-by-line image information. The means in the invention can leverage complexity of calculation, calculation delay, internal memory occupancy and interlacing eliminating effect, provide high quality images with low memory access frequency and low memory occupancy, and be convenient for implementation on data signal processors. The invention also provides an interlacing eliminating device based on motion detection.

Description

technical field [0001] The invention relates to the field of computer image processing, in particular to a method and device for deinterlacing based on motion detection. Background technique [0002] At present, the most commonly used radio and television standards include the NTSC system of 525 interlaced / 60Hz field frequency, which is mainly used in North America and Japan; the PAL system of 625 progressive / 25Hz frame frequency, which is mainly used in Europe and China; And the SECAM system with 625 progressive / 25Hz frame frequency, which is mainly used in France, Eastern Europe and the Middle East. The existence of multiple standards has caused great obstacles to the easy exchange of domestic and foreign programs and live broadcast and rebroadcast of sports events. Therefore, the mutual conversion between the standards has become an important research topic in the field of radio and television. Moreover, with the emergence of high-definition large-screen displays such a...

AI Technical Summary

Problems solved by technology

("A Novel Adaptive Deinterlacing Method Based on Motion Compensation", Microelectronics and Computers, September 2002) discloses an adaptive method based on motion compensation, which includes bidirectional block matching motion estimation, block artifact elimination and automatic Adapt to the three processing modules of interpolation, although the performance is excellent, but the two-way block matching motion estimation processing module in its method cannot avoid frame waiting delay and large amount of data calculation

In practical applications, it is difficult to quickly obtain accurate and reliable motion vectors. The only solution to this problem is to resort to complex and large-scale motion estimation circuits, which increases the system cost.

Images