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The fixed-point landing technology of multi-rotor aircraft is an indispensable step to realize fully autonomous flight. Most of the aircraft in the horizontal positioning relies on visual guidance, and PID control is generally used in height control, but it is difficult to resist the interference of the aircraft at low altitude spoiler. The Active Disturbance Rejection Controller(ADRC) designed in...
Modeling the nonstationarity of image signals is one of the challenging issues for image interpolation. In this paper, we propose a similarity probability modeling to faithfully characterize the nonstationarity of image signals, and present a novel image interpolation algorithm based on the proposed model. The missing pixels are estimated in groups by weighted block estimation. The weight of each...
Seam carving is an effective operator supporting content-aware resizing for both image reduction and expansion. However, repeated seam removing and inserting processes lead to excessively distortion image when imposed on seam insertion then removal operations or the other way around. With considering the relationship between seam removing and inserting processes, we present an ameliorated energy function...
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