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A technology of optical flow tracking and optical flow, which is applied in the field of image processing, can solve problems such as system upgrade and maintenance restrictions, poor system performance, and complex calculations, and achieve the effect of avoiding upgrades and maintenance and facilitating upgrades and maintenance
Inactive Publication Date: 2018-08-31
SZ DJI TECH CO LTD
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[0003] When using image pyramids for optical flow tracking, the calculations involved are very complex
If there are more system hardware resources, the system performance will be improved, but it will bring certain restrictions to the system upgrade and maintenance.
If the system hardware resources are less, it will be convenient for system upgrade and maintenance, but the system performance is poor
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0023] Image pyramid is a kind of multi-scale representation of image, which is an effective but conceptually simple structure to explain images at multiple resolutions. Image pyramids can be obtained by smoothing and / or downsampling. The image pyramid may include multiple image layers (also called image layers, layers, pyramid layers, etc.), and the resolution of the upper layer of the image pyramid is lower than that of the lower layer.
[0024] The image pyrami...
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Abstract
An optical flow tracking device (220, 400, 600, 700, 810) and method can make full use of system resources to facilitate subsequent system upgrade and maintenance without affecting system performance.The optical flow tracking device (220, 400, 600, 700, 810) includes image pyramid establishing circuits (402, 730) and optical flow tracking circuits (404, 740), wherein the image pyramid establishing circuit (402, 730) is used to establish a first image pyramid (102) of a first image (I) and a second image pyramid (104) of a second image (J), and the optical flow tracking circuits (404, 740) areused for performing optical flow tracking processing on the k layer image layering (112, 114, 116, 118) in a first image pyramid (102) and the k layer image layering (112, 114, 116, 118) in the second image pyramid (104) . In a multiplication process of the optical flow tracking processing, the plurality of multipliers multiply data corresponding to the image layering (112, 114, 116, 118)of the first image pyramid (102) and / or the second image pyramid (104), wherein each multiplier in the plurality of multipliers performs multiplication processing in a plurality of serial clock, anddifferent multipliers in the plurality of multipliers perform multiplication processing in parallel at the same clock.
Description
technical field [0001] The present application relates to the field of image processing, and more particularly, to an optical flow tracking device and method. Background technique [0002] Image pyramid is a kind of multi-scale representation of image, which is an effective but conceptually simple structure to explain images at multiple resolutions. Image pyramids are useful for a variety of purposes, such as optical flow tracking. [0003] When using image pyramids for optical flow tracking, the calculations involved are very complex. If there are more system hardware resources, the system performance will be improved, but it will bring certain restrictions to the system upgrade and maintenance. If the system hardware resources are less, it will be convenient for system upgrade and maintenance, but the system performance is poor. [0004] When using image pyramids for optical flow tracking, how to make full use of system resources without affecting system performance is ...
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