基本信息:
- 专利标题： Imaging apparatus, and imaging control method
- 专利标题（中）：成像装置和成像控制方法
- 申请号：JP2009176202 申请日：2009-07-29
- 公开(公告)号：JP2011015380A 公开(公告)日：2011-01-20
- 发明人： UEDA TAKASHI , MIZUGUCHI ATSUSHI
- 申请人： Sony Corp , ソニー株式会社
- 专利权人： Sony Corp,ソニー株式会社
- 当前专利权人： Sony Corp,ソニー株式会社
- 优先权： JP2009134151 2009-06-03; JP2009176202 2009-07-29
- 主分类号： H04N5/243
- IPC分类号： H04N5/243 ; G03B7/28
摘要：
PROBLEM TO BE SOLVED: To provide a technology for an imaging apparatus capable of effectively utilizing the dynamic range of an imaging means and generating a favorable synthetic image by taking multiple shots that suitably reflect the luminance difference of a subject.SOLUTION: In an imaging apparatus, a luminance difference of a subject is detected from maximum and minimum luminance values Bmax, Bmin obtained on the basis of a luminance histogram HG, for example. Next, an exposure control value Budr of a bright part reference having an exposure level difference ΔB obtained by multiplying the luminance difference by a coefficient k (e.g., 0.5) and an exposure control value Bovr of a dark part reference are set with a proper exposure value Bcnt in normal imaging (in the case of one time of imaging) therebetween. Two shots set to the exposure control values Budr, Bovr are performed and image portions extracted from two images captured by an image sensor are synthesized to generate a synthetic image. Thus, since multiple shots suitably reflecting the luminance difference in the subject can be performed, a dynamic range of the image sensor can be effectively utilized and a favorable synthetic image can be generated.
摘要（中）：
要解决的问题：提供一种能够有效利用成像装置的动态范围并且通过拍摄适当地反映被摄体的亮度差的多次拍摄来产生有利的合成图像的成像装置的技术。解决方案：在成像装置 根据例如基于亮度直方图HG获得的最大和最小亮度值Bmax，Bmin来检测被摄体的亮度差。 接下来，通过适当的曝光来设定具有通过将亮度差乘以系数k（例如，0.5）和暗部参考值的曝光控制值Bovr而获得的曝光水平差ΔB的明亮部分基准的曝光控制值Budr 正常成像（在一次成像的情况下）的Bcnt值。 执行设置为曝光控制值Budr，Bovr的两个拍摄，并且合成从由图像传感器拍摄的两个图像提取的图像部分以产生合成图像。 因此，由于可以进行适当地反映被摄体的亮度差的多次拍摄，因此可以有效地利用图像传感器的动态范围，并且可以产生有利的合成图像。