METHOD AND APPARATUS FOR EXTRACTING FINGERPRINT OF VIDEO HAVING PLURALITY OF FRAMES

• Main Authors: KIM DAE HWANG, PARK CHAN WUNG, KIM SEUNG-BIN, SHIN SEONG HYEON, JEONG JISU
• Format: Patent
• Language: English; Japanese
• Published: 03.03.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

To provide a method for extracting a fingerprint of a video having a plurality of frames performed by at least one processor.SOLUTION: The method for extracting a fingerprint of a video includes the steps of: calculating 2D discrete cosine transform (DCT) coefficients from each of the plurality of frames of the video; extracting, from the 2D DCT coefficients, a coefficient having a basis satisfying at least one of up-down symmetry or left-right symmetry; and calculating a fingerprint of the video on the basis of the extracted coefficient.SELECTED DRAWING: Figure 1 【課題】 本開示は少なくとも一つのプロセッサによって実行される複数のフレームを含む映像の指紋を抽出する方法に関する。【解決手段】複数のフレームを含む映像の指紋を抽出する方法は、複数のフレームそれぞれから２次元離散コサイン変換係数を算出する段階、２次元ＤＣＴ係数のうち基底が上下対称または左右対称のうち少なくとも一つを満足する係数を抽出する段階および抽出された係数に基づいて前記映像の指紋を算出する段階を含む。【選択図】 図１