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H263_BINDCT.tar
- h.261 is the first for of DCT that uses sined and unsigned number
H261coding
- H.261编码格式提出于1990年,用于运动图像的编码中。它的编码效率高,图像质量好且实时性好,广泛用于会议系统的运动图像编码之中。-H.261 encoding format proposed in 1990, for the coding of moving picture. Its high coding efficiency, image quality and real-time, and conferencing systems are widely used in image co
JPEGv1.2.1.tar
- MPEG, CCITT H.261 (P*64), JPEG Image and Image sequence compression/decompression C software engines. The Portable Video Research Group at Stanford have developed image/image sequence compression and decompression engines (codecs) for
PVRG_JPEG
- MPEG, CCITT H.261 (P*64), JPEG Image and Image sequence compression/decompression C software engines. The Portable Video Research Group at Stanford have developed image/image sequence compression and decompression engines (codecs) for
img_encoding
- Discrete Cosine Transform (DCT) and quantization are two critical parts in image encoding. By discussing how coefficients retaining and quantization step selection influence the quality of the reconstructed image, this homework helps to understand th
dct
- 在编码端,影像首先被分割成8 8块。 DCT的操作,然后 适用于每个图像块。据国际视频标准(JPEG,H.261...), 变换系数四舍五入到最接近的整数,并剪辑成12位( 2048至 2047)。这些系数,然后根据锯齿扫描顺序安排到1-D数据阵列。 然后,选择一些系数和量化。在解码器端,量化系数 反DCT(IDCT)重建。 IDCT的输出调整和裁剪,以0 255。 (我们只有Y信号处理。),DCT,量化和锯齿扫描规格 为了下页。 下面
H261coding
- H.261编码格式提出于1990年,用于运动图像的编码中。它的编码效率高,图像质量好且实时性好,广泛用于会议系统的运动图像编码之中。-H.261 encoding format proposed in 1990, for the coding of moving picture. Its high coding efficiency, image quality and real-time, and conferencing systems are widely used in image co