The BPG and HEVC Image and video Formats


In a world of constrained bandwidth links and a voracious demand for imagery and video the BPG graphic format is an important step forward. BPG stands for Better Portable Graphics and is based on the open source HEVC video compression standard for improved compatibility. It has a number of key features in comparison with JPEG, from the author;

  • High compression ratio. Files are much smaller than JPEG for similar quality.
  • Supported by most Web browsers with a small Javascript decoder (gzipped size: 56 KB).
  • Based on a subset of the HEVC open video compression standard.
  • Supports the same chroma formats as JPEG (grayscale, YCbCr 4:2:0, 4:2:2, 4:4:4) to reduce the losses during the conversion. An alpha channel is supported. The RGB, YCgCo and CMYK color spaces are also supported.
  • Native support of 8 to 14 bits per channel for a higher dynamic range.
  • Lossless compression is supported.
  • Various metadata (such as EXIF, ICC profile, XMP) can be included.

HEVC has been developed has been developed as a successor to H.264/MPEG4 and doubles the compression ratio, twice the image for the same bandwidth and 4k images at up to 8192×4320 pixels. It also supports 3D and Multi View extensions. Windows 10 will have native HVEC support, joining Android Lollipop and the iPhone 6.

The offer is a simple one, more images or better quality images down the same bandwidth link

No doubt military equipment manufacturers will be looking at how best to exploit BPG and HEVC in their sensor, encryption and communications products improving on the relatively low resolution graphics available in current products.

The videos below describe the significance of HEVC