Automatic alignment of video frames for image processing

Details Automatic alignment of video frames for image processing Automatic alignment of video frames for image processing

2011-08-30

2011-08-30

Bhatnagar, Anand (Department: 2624)

Image analysis

Image transformation or preprocessing

Changing the image coordinates

C382S154000, C382S128000, C382S131000, C382S284000

Reexamination Certificate

active

08009932

ABSTRACT:
The provided is a method that can automatically align image frames in recorded video clips. Individual frames in video may shift and rotate due to shaking or vibration of a video camera. Unaligned frames make some imaging processing techniques difficult or infeasible. One example of image processing techniques is to isolate, recognize, and/or quantitatively analyze vapor plume images captured by an Infrared (IR) camera. Such techniques have a great potential to be used to automatically detect volatile organic compounds (VOC) leaked from process equipment at refineries and chemical plants. This invention is a technique for various subsequent image processing techniques. The invention uses spatially based Fast Fourier Transforms (FFT) to determine amount of shift, rotation, and scaling to align image frames, and uses a digital filtering technique to improve the alignment.

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