Image capture devices and methods may be used to pre-buffer media storage. The pre-buffering method includes recording an image capture segment in a circular buffer. The circular buffer includes a number of recordable segments. The pre-buffering method includes determining whether a key moment command is received. If a key moment command is not received, the method includes recording a next image capture segment in a next adjacent recordable segment of the circular buffer if the next adjacent recordable segment of the predetermined number of recordable segments is available. If a key moment command is not received, the method includes overwriting an oldest recordable segment if the next adjacent recordable segment of the predetermined number of recordable segments is not available. If a key moment command is received, the pre-buffering method includes marking a wrap point in the circular buffer and switching from recording in the circular buffer to linear recording.

One image to serve as a main image is selected among a plurality of images and a continuous period length for which a selected image is continued as the main image is set in accordance with an image classification to which the selected image corresponds among a plurality of image classifications.

A path and/or orientation of object approaching an athlete is tracked using two or more cameras. At least two sets of images of the object are obtained using at least two different cameras having different positions. Motion regions within images are identified, and candidate locations in 2D space of the object are identified within the motion region(s). Based thereon, a probable location in 3D space of the identifiable portion is identified, for each of a plurality of instants during which the object was approaching. A piecewise 3D trajectory of at least the identifiable portion of the object is approximated from the probable locations in 3D space of the object for multiple instants during which the object was approaching the athlete. A graphical representation of the 3D trajectory of the object is incorporated into at least one of the sets of images.

Various methods and systems are provided for image processing for multiple cameras. In one embodiment, a method comprises acquiring a plurality of image frames from each image frame source of a plurality of image frame sources, each plurality of image frames acquired at a first frame rate, combining the plurality of image frames from each image frame source into a single plurality of image frames with a second frame rate higher than the first frame rate, and outputting the single plurality of image frames as a video. In this way, high-frame-rate video may be obtained with multiple low-frame-rate image frame sources or cameras.

Embodiments of this application provide a video special effect generation method and a terminal. The method includes: obtaining, by a terminal, target information of a first video segment in a target video, where the target information includes one or more of a content feature of the first video segment and a photographing parameter of the first video segment; determining, by the terminal, a first play speed of the first video segment based on the target information of the first video segment; and then adjusting, by the terminal, a play speed of the first video segment to the first play speed. According to the embodiments of this application, video editing efficiency can be improved.

A method for synthesizing a video includes: acquiring audio data and dotting data corresponding to the audio data, the dotting data including a beat time point and a beat value corresponding to the beat time point of the audio data; acquiring a plurality of material images from a local source; and synthesizing, based on the dotting data, the plurality of material images and the audio data to acquire a synthesized video, a switching time point of each of the material images in the synthesized video being the beat time point of the audio data.

An image capture apparatus that communicates with an image processing apparatus, transmits a plurality of RAW images acquired by continuous shooting by an image capturing unit to the image processing apparatus, receives an image in which a predetermined RAW image is developed or an extracted result of the predetermined RAW image from the image processing apparatus which extracts the predetermined RAW image that satisfies a predetermined condition from the plurality of RAW images received from the image capture apparatus, and, when a predetermined representative image among the plurality of RAW images acquired by the image capturing unit and a predetermined RAW image extracted by the image processing apparatus are different, determines whether to replace the predetermined representative image with the predetermined RAW image.

A ranging system includes a ranging apparatus, an angle sensor disposed in the terminal device or in the ranging apparatus, and a processor. The ranging apparatus includes a measuring wheel, a rotating shaft disposed on the measuring wheel, and an electronic counter connected to the rotating shaft and configured to obtain distance information, in real time, of a route which the measuring wheel has already traveled. The angle sensor is configured to obtain angle information in real time. The processor is configured to generate a traveling trajectory diagram of the measuring wheel based on the distance information from the electronic counter and the angle information from the angle sensor, and perform optimization processing on the traveling trajectory to generate an optimized trajectory diagram.

An imaging apparatus includes an imaging element, and a processing portion that generates single image data by combining a plurality of pieces of image data output from the imaging element and outputs the generated single image data, in which the plurality of pieces of image data are image data generated by performing imaging accompanying A/D conversion of different reference levels, and the number of bits, in units of pixels, of the single image data output from the processing portion is greater than the number of bits of each of the plurality of pieces of image data in units of pixels.

This application discloses a video recording method and an electronic device, and pertains to the field of video processing technologies. The video recording method includes: receiving, during recording of a first video based on a first recording property, a first input for a shooting preview screen corresponding to the first video; in response to the first input, obtaining a second recording property; and recording a second video based on the second recording property while retaining the recording of the first video based on the first recording property.