Leading-Supporting Dual-Camera HDR Synthesis with ROI-Based Alignment

• Main Authors: Shawn Chiang, 江宗翰
• Other Authors: Ching-Wei Yeh
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/75188181667817790076

碩士 === 國立中正大學 === 電機工程研究所 === 101 === Most of the existing methods are focused on global HDR image generation for static scenes. However, these methods are not effective for the dynamic scenes. In this paper we present a method that generates High Dynamic Range (HDR) images from two differently exposed Low Dynamic Range (LDR) images taken from different overexposed ROI. It allows generating HDR images for scenes with fast motion or from moving vehicle. Image alignment is based on optimized SIFT methodology. Chromatic aberration compensation for overexposed ROI of the scene is solved by using CAC mask and luminance smoothing weight. Less feature elements information generation technique is applied to aligned images in order to produce HDR image.