IMAGING APPARATUS, FLICKER FREQUENCY CALCULATION METHOD, AND PROGRAM

• Main Author: TERASAWA TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 24.07.2023
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

To accurately calculate a flicker frequency.SOLUTION: An imaging apparatus includes a flicker detection unit which calculates a detection value by integrating pixel values in the entire or partial position ranges of each line for one or a plurality of continuous lines of each frame in each of two or more adjacent frames of an image made of a plurality of frames, and calculates a flicker frequency on the basis of a high-pass filter processing result value obtained by performing high-pass filter processing on the plurality of detection values calculated in each of the two or more adjacent frames.SELECTED DRAWING: Figure 4 【課題】フリッカ周波数を精度よく算出する。【解決手段】撮像装置は、複数のフレームからなる画像の隣接する２以上の各フレームにおいて、各フレームの1または複数の連続するライン毎に、各ラインの全体または一部の位置範囲の画素値を積算することで検波値を算出し、隣接する２以上の各フレームで算出された複数の検波値に対してハイパスフィルタ処理を行うことで得られたハイパスフィルタ処理結果値に基づいてフリッカ周波数を算出するフリッカ検出部を備える。【選択図】図４