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102 results about "Still frame" patented technology

A still frame is a single static image taken from a film or video, which are kinetic images. Still frames are also called freeze frame, still image, video prompt, preview or misleadingly thumbnail, keyframe, poster frame, or screen shot/grab/capture/dump. Freeze frames are widely used on video platforms and in video galleries, to show viewers a preview or a teaser. Many video platforms have a standard to display a frame from mid-time of the video. Some platforms offer the option to choose a different frame individually.

Media identification system and method

The present invention relates to a media identification system and method. The system and method includes a media source, a signal controlling device, a communication device, a server and a user interface. The media source can be in various formats, such as audio, video and still frame. A medium signal is converted and processed in the signal controlling device to generate a server-recognizable code, which can be transmitted to the server through the communication device. The communication device can be a mobile phone, or other communication devices adapted to relay signals. A “short-long” range signal transmission is also disclosed in the present invention, wherein the “short range” signal transmission between the signal controlling device and the communication device may be achieved by a wireless radio or optical transmission-reception technology such as Bluetooth, while the “long range” signal transmission between the communication device and the server may be achieved by WiFi or regular mobile phone transmission. Upon receiving the server-recognizable code, the server can analyze and search for candidate matches in the database. Once the server identifies the media, the media identification information can be transmitted back to from the server and displayed on the user interface.
Owner:ALPINE ELECTRONICS INC

Method and device for detecting flicker of light source in video sequence and image processing apparatus

The invention is applicable to the technical field of image and video processing, and provides a method and device for detecting the flicker of a light source in a video sequence and an image processing device. The method comprises the following steps of: acquiring a previous frame image and a current frame image; Extracting brightness information of a previous frame image and brightness information of a current frame image, and calculating a brightness line average value of the previous frame image and a brightness line average value of the current frame image; Calculating a difference function of a luminance line average value of a previous frame image and a luminance line average value of a current frame image, and integrating the difference function point by point to obtain a flicker characteristic component; Analyzing the scintillation characteristic component to obtain an analysis result; According to the analysis results and the preset flicker frequency threshold value, whetherthe current frame image has flicker phenomenon or not is judged. The invention can detect whether the flicker phenomenon caused by the artificial light source exists in the video sequence, has low time complexity and high detection accuracy, does not require the detected frame image to be a still frame image, and can be applied to the flicker detection of the light source in the moving video sequence.
Owner:ARKMICRO TECH
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