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Because it enables interoperability with limited-capability decoders. If for example, a decoder does not support VBMSE them this can be easily turn off. Furthermore, it allows latency control by changing the averaging period of rate-control. Finally, run-time programmability may be important for applications requiring encoding at different rates and qualities.
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Because otherwise uninterrupted streaming and play-back is not feasible.
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The core can be configured to perform only intra-coding either at synthesis-time or at run-time. In Intra-only mode the motion estimation engine and the de-blocking filter are disabled, and the need for accessing an external memory can be eliminated. If the core is limited during synthesis to perform only Intra-coding, then its size is cut to half.
In Intra-only mode, the core provides quality much better than that of JPEG, and comparable to that of JPEG2000.
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The baseline profile supports only YUV, 4:2:0 images, with 8bits per color-sample. Encoding of greyscale images with 8bits per pixel is feasible, if the greyscale samples are presented as luma（Y）to the core, and the chroma samples（U, and V）are assigned a constant value.
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We provide Bit-Accurate Software Model（BAM）, which can be used to assess video quality with your own clips. Furthermore, we provide a reference design, based on PCIe for raw and compressed video exchange, that can enable rapid integration to your application. The reference design is available in source RTL, or as a targeted FPGA netlist, or mapped in commercially available FPGA prototyping boards.
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The first JPEG core was introduced in 2001.
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Yes, the cores are production proven in ASIC and FPGAs.
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While being fully featured, they are probably the fastest and smallest cores in the market. Furthermore, CAST is the only vendor of 12-bit JPEG encoder as well as a SpeedView compatible encoder
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Baseline JPEG encoder, decoder and Codec, Baseline/Extended Sequential encoder（8 and 12bit）, Scalado-SpeedViewTM encoder, Lossless JPEG encoder and decoder.
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Baseline JPEG and Baseline/Extended Sequential are lossy algorithms. Lossless JPEG is lossless, but it also has a low-complexity/low-quality lossy compression capability.
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