5 results about "Single frame" patented technology

An image signal representing consecutive video frames is resampled, using different sampling phases so that different subsets of pixels are taken from each frame in a consecutive set of frames. The resulting set of resampled frames is combined into a single frame and transferred to an image display unit that divides the single frame into subframes and displays the subframes sequentially with different pixel shifts. Each pixel in each subframe is displayed at its correct spatial and temporal position. Although the resampling process greatly reduces the pixel data transfer rate, the image display unit can reproduce still images without loss of definition and moving images without motion blur.

The present invention provides a white light microscopic interference morphology reconstruction method based on a mixing interference fringe. A Mirau-type white light interferometry optical system is employed, a piezoelectric ceramics mobile station is employed to perform precision control of the vertical scanning movement of an interference objective, and a series of collected white light microscopy interferograms are stored. The collected interference grey-scale map is converted to a light intensity graph, a normalization modulation degree graph corresponding to a single-frame interference image is obtained through the frequency domain filtering and the base frequency signal extraction algorithm, and aiming at each independent vertical scanning position, a mixing interference image is obtained through the multiple of the same pixel point light intensity value and the corresponding modulation degree numerical value. A series of mixing interference images are obtained through vertical scanning, and the height information of each pixel point of a detected object is obtained through searching the mixing interference extreme value and the corresponding scanning displacement thereof to realize the three-dimensional morphology reconstruction of the object. The white light microscopic interference morphology reconstruction method based on the mixing interference fringe is high in measurement precision, high in anti-interference capability and simple in system, and is suitable for three-dimensional morphology detection of the micro-nano structure.

The present invention provides a device and method of infrared imaging for active detection of an aero-optical effect and real-time compensation of an aero-optical effect. A laser / infrared co-aperture device employs a reciprocating-type optical system with a compact structure; the laser and the emission lens of a laser emission device are used at the outer portion of an aero-optical turbulence area to form laser spots; a wavefront photoelectric sensor is configured to receive laser back scattering energy and extract deviation parameters in distortion wavefront; an infrared detector is configured to extract the infrared radiation heat corresponding to target optical waves; and an image correction circuit and a degeneration image compensation method operated on the image correction circuit are configured to receive infrared object original data and aero-optical wavefront distortion deviation parameters and perform single-frame real-time deconvolution operation of the original image data and the deviation parameters to obtain recovered images so as to realize real-time compensation of the aero-optical effect. The scene adaptability is high, and the correction timeliness is high.

The invention discloses a human face living body detection method and device and a computer readable storage medium. The method comprises the following steps of S1, processing a to-be-detected pictureto serve as input of a convolutional neural network model; and S2, convoluting on the to-be-detected picture to obtain convolution output; S3, inputting the convolution output into the classificationmodel for analysis to obtain a feature vector of the to-be-detected picture; S4, determining a picture sample matched with the to-be-detected picture from each pre-acquired picture sample; S5, takingthe label of the picture sample matched with the to-be-detected picture determined in the step S4 as the label of the to-be-detected picture to obtain a detection result of the to-be-detected picture. The single-frame picture is used as living body detection input, so that the method is simple and easy to use, and industrial application and upgrading and reconstruction of old projects are facilitated; and the feature component extraction and deep learning technology is utilized to improve the accuracy and speed of living body detection.