# US 10,122,984 B2 · Pan/tilt/zoom camera based video playing method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,984 B2 - Document ID: US10122984B2 - Status: Granted - Kind: B2 - Application number: 15/488,118 - Filed: 2017-04-14 - Published: 2017-09-14 - Granted: 2018-11-06 - Earliest claimed: 2014-10-24 - Assignees: SK Telecom Co., Ltd. - Applicants: SK Telecom Co., Ltd. - Inventors: Gwang-gook Lee - Web page: https://patentgrep.com/patent/US10122984B2 ## CPC - H04N 9/87: Regeneration of colour television signals (H04N9/80 takes precedence) - G06V 20/41: {Higher-level, semantic clustering, classification or understanding of video scenes, e.g. detection, labelling or Markovian modelling of sport events or news items (segmenting video sequences G06V20/49)} - G06V 20/46: {Extracting features or characteristics from the video content, e.g. video fingerprints, representative shots or key frames} - G06V 20/49: {Segmenting video sequences, i.e. computational techniques such as parsing or cutting the sequence, low-level clustering or determining units such as shots or scenes} - G11B 27/10: Indexing; Addressing; Timing or synchronising; Measuring tape travel - H04N 5/147: {Scene change detection} - H04N 23/60: Control of cameras or camera modules - H04N 23/69: Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming - H04N 23/698: for achieving an enlarged field of view, e.g. panoramic image capture - G06V 20/44: {Event detection} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract A pan/tilt/zoom (PTZ) camera based video reproducing method and a PTZ camera based video reproducing apparatus are disclosed. The present disclosure in some embodiments provides PTZ camera based video reproducing method and apparatus that recognize, from a plurality of preset videos captured by a PTZ camera, the preset videos from the same imaged location, select the recognized preset videos, and reproduce the video images of choice. ## Claims ### Claim 1 A video reproduction apparatus comprising: an image position setting unit configured to set a position at which (i) video images corresponding to a first section are taken, wherein the video images corresponding to the first section, which are captured at the set position, are selected from among a plurality of video images captured at various view positions by a single camera; a reference image generation unit configured to generate a reference image for the first section of video images; an image detection unit configured to detect (ii) video images corresponding to a second section from among the plurality of video images captured at the various view positions, based on the reference image, wherein the video images corresponding to the second section are detected by determining whether the video images corresponding to the second section are captured at the set position which is same to the first section; and a video reproduction unit configured to consecutively reproduce (i) the video images corresponding to the first section and (ii) the video images corresponding to the second section, which are captured at the same set position, among the plurality of video images captured at the various view positions. ### Claim 2 (depends on 1) The video reproduction apparatus of claim 1, wherein the image detection unit detects the second section of the video images when a pixel difference value between a frame of the second section of the video images and the reference image is less than a predetermined threshold value. ### Claim 3 (depends on 1) The video reproduction apparatus of claim 1, wherein the reference image generation unit is configured to generate the reference image using a first frame of the first section of the video image. ### Claim 4 (depends on 1) The video reproduction apparatus of claim 1, wherein the reference image generation unit is configured to calculate an average pixel value by using pixels at the same position in each of a plurality of image frames included in the first section of the video images, and generate the reference image by using the average pixel value. ### Claim 5 (depends on 1) The video reproduction apparatus of claim 1, further comprising an image position setting unit configured to select the first section of the video images based on an inputted selection signal. ### Claim 6 (depends on 1) The video reproduction apparatus of claim 1, wherein the image detection unit is configured to store the first section of the video images and the detected second section of the video images consecutively and separately form the video images. ### Claim 7 A video reproduction method comprising: setting a position at which (i) video images corresponding to a first section are taken, wherein the video images corresponding to the first section, which are captured at the set position, are selected from among a plurality of video images captured at various view positions by a single camera; generating a reference image for the first section of video images; detecting (ii) video images corresponding to a second section from among the plurality of video images captured at the various view positions, based on the reference image, wherein the video images corresponding to the second section are detected by determining whether the video images corresponding to the second section are captured at the set position which is same to the first section; and consecutively reproducing (i) the video images corresponding to the first section and (ii) the video images corresponding to the second section, which are captured at the same set position, among the plurality of video images captured at the various view positions.