IEEE Trans Image Process. 2010 Nov;19(11):2958-65. doi: 10.1109/TIP.2010.2051867. Epub 2010 Jun 1.
A discrete cosine transform (DCT) can be easily implemented in software and hardware for the JPEG and MPEG formats. However, even though some integer DCTs (IntDCTs) for lossless-to-lossy image coding have been proposed, such transform requires redesigned devices. This paper proposes a hardware-friendly IntDCT that can be applied to both lossless and lossy coding. Our IntDCT is implemented by direct-lifting of DCT and inverse DCT (IDCT). Consequently, any existing DCT device can be directly applied to every lifting block. Although our method requires a small side information block (SIB), it is validated by its application to lossless-to-lossy image coding.
离散余弦变换 (DCT) 可以很容易地在 JPEG 和 MPEG 格式的软件和硬件中实现。然而，尽管已经提出了一些用于无损到有损图像编码的整数 DCT（IntDCT），但这种变换需要重新设计设备。本文提出了一种适用于无损和有损编码的硬件友好型 IntDCT。我们的 IntDCT 通过 DCT 和逆 DCT（IDCT）的直接提升来实现。因此，任何现有的 DCT 设备都可以直接应用于每个提升块。虽然我们的方法需要一个小的边信息块 (SIB)，但它通过应用于无损到有损图像编码得到了验证。
