CAJ | 학술논문

为提高搜救航拍中生成大视场红外图像的效率，提出一种序列图像提取关键帧的方法。分析图像获取系统的运动参数和获取红外图像的内方位元素，采用（j,w,k）转角系统作为图像的外方位元素，根据摄影测量中的共线方程式计算序列图像间的重叠率，并以相位相关法对计算出的重叠率进行验证。最后根据计算出的重叠率和采用的Harris拼接算法所要求的最佳重叠率，来确定序列图像中的关键帧。试验结果表明，计算出的重叠率可以作为关键帧提取的标准，待拼接的图像数量减少，生成大视场图像的效率提高88.71%。
위제고수구항박중생성대시장홍외도상적효솔，제출일충서렬도상제취관건정적방법。분석도상획취계통적운동삼수화획취홍외도상적내방위원소，채용（j,w,k）전각계통작위도상적외방위원소，근거섭영측량중적공선방정식계산서렬도상간적중첩솔，병이상위상관법대계산출적중첩솔진행험증。최후근거계산출적중첩솔화채용적Harris병접산법소요구적최가중첩솔，래학정서렬도상중적관건정。시험결과표명，계산출적중첩솔가이작위관건정제취적표준，대병접적도상수량감소，생성대시장도상적효솔제고88.71%。
To improve the efficiency of wide field infrared image generation in research and rescue aerial photography, a method for key frame extraction from image sequence is proposed in this paper. Firstly, the motion parameters of image acquiring system and image’s elements of exterior and interior orientation are considered. Secondly, the(φ,ω,κ)angle system is adopted and the overlap rate between images is calculated according to the collinear equation. Finally, the overlap rate calculated and the best overlap rate offered by Harris algorithm are consider to determine the key frames. The result shows the overlap rate which is calculated can be indicator for key frame extraction, and the efficiency of wide field image is promoted to 88.71%.