Image ENCRYPTION on HDR IMAGES for OpenEXR Format

適用於OpenEXR格式的高動態範圍影像加密技術

高的動態範圍可以使得像素值不再侷限於255之內。由於高動態範圍影像的新格式，使得低動態範圍影像的影像加密法不能直接解決高動態範圍影像的加密的需要。因此，高動態範圍影像加密應當特別以其新穎的形式設計。據我們所知，本文是第一個對於Open-EXR高動態範圍影像的加密研究。加密後，加密的結果依然能被目前最常使用的影像處理軟體Adobe Photoshop正常讀取，這也被稱為格式相容。

The higher dynamic ranges can represented larger pixel values no longer under 255. Due to the new formats of HDR images, traditional image encryption for low dynamic range (LDR) images is not suitable for meeting the need of encryption of HDR images. Thus, HDR image encryption should be designed especially for its novel for-mat. To the best of our knowledge, this paper is the first research for OpenEXR HDR image encryption. After encryption, the encrypted results are compatible with commonly image applications like Adobe Photoshop, which are also called format-compliance