Motion-JPEG2000 codec compensated for interlaced scanning videos
Motion-JPEG2000 codec compensated for interlaced scanning videos
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DOI：
10.1109/tip.2005.857255
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发表时间：
2005-12
影响因子：
10.6
通讯作者：
T. Ishida;S. Muramatsu;H. Kikuchi
中科院分区：
文献类型：
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作者：
T. Ishida;S. Muramatsu;H. Kikuchi
本文提出了一种集成可逆去隔行的Motion-JPEG2000（MJP2）实现方案。在之前的工作中，我们开发了一种可逆去隔行技术，该技术可以抑制隔行扫描视频的场隔行扫描引起的梳齿伪影，并影响可扩展的基于帧的编解码器（例如 MJP2）的质量。我们的技术有两个特点，即保留采样密度并通过逆过程恢复图像质量。当去隔行器和逆处理之间没有放置编解码器时，原始视频将被完美重建。否则，几乎就完全恢复了。我们提出了这种可逆去隔行器的应用场景，用于增强基于帧的 MJP2 编码中复杂的信噪比可扩展性。所提出的系统在低比特率下抑制梳齿伪影，同时在标准比特流格式内通过其逆过程在高比特率下实现质量恢复。本文的主要目的是提出一个为 MJP2 编解码器提供高质量恢复的系统。我们证明了我们的可逆去隔行器可以嵌入到 MJP2 中使用的离散小波变换中。结果，可以补偿控制率失真特性的能量增益因子以获得最佳压缩。仿真结果表明，在以 2.0 bpp 解码 8 位灰度足球序列时，通过应用我们提出的增益补偿，质量恢复得到了改善，例如，峰值信噪比提高了 2.0 dB 以上。
This paper presents an implementation scheme of Motion-JPEG2000 (MJP2) integrated with invertible deinterlacing. In previous work, we developed an invertible deinterlacing technique that suppresses the comb-tooth artifacts which are caused by field interleaving for interlaced scanning videos, and affect the quality of scalable frame-based codecs, such as MJP2. Our technique has two features, where sampling density is preserved and image quality is recovered by an inverse process. When no codec is placed between the deinterlacer and inverse process, the original video is perfectly reconstructed. Otherwise, it is almost completely recovered. We suggest an application scenario of this invertible deinterlacer for enhancing the sophisticated signal-to-noise ratio scalability in the frame-based MJP2 coding. The proposed system suppresses the comb-tooth artifacts at low bitrates, while enabling the quality recovery through its inverse process at high bitrates within the standard bitstream format. The main purpose of this paper is to present a system that yields high quality recovery for an MJP2 codec. We demonstrate that our invertible deinterlacer can be embedded into the discrete wavelet transform employed in MJP2. As a result, the energy gain factor to control rate-distortion characteristics can be compensated for optimal compression. Simulation results show that the recovery of quality is improved by, for example, more than 2.0 dB in peak signal-to-noise ratio by applying our proposed gain compensation when decoding 8-bit grayscale Football sequence at 2.0 bpp.