Roboflex util jpeg Library
Project description
roboflex.util.jpeg
Roboflex support for jpeg compression to file and memory, and jpeg decompression from memory.
Useful for compressing images over slow transports (wifi, etc).
System Dependencies
None! We build jpeg-compression from source...
pip install
pip install roboflex.util.jpeg
Import
import roboflex.util.jpeg as ruj
Nodes
There are two complementary nodes: JPEGCompressor
, which can turn rgb tensors into jpegs in memory, and JPEGDecompressor
, which does the opposite. Useful either for writing rgb tensors to files, or compressing them (NOTE jpeg is lossy).
# all parameters are optional
c = JPEGCompressor(
# in the incoming message, where to find the rgb tensor
image_key = "rgb",
# in the outgoing message, where to place the jpeg data
output_key = "jpeg",
# If this is provided, will ALSO write jpeg files with this
# prefix, with a variation of the date and time as the suffix.
filename_prefix = "",
# name of the node
name = "JPEGCompressor",
# prints internal info
debug = False,
)
... and ...
c = JPEGDecompressor(
# in the incoming message, where to find the jpeg data as a blob
input_key = "jpeg",
# in the outgoing message, where to place the rgb data as a tensor
output_key = "jpeg",
# name of the node
name = "JPEGDecompressor",
# prints internal info
debug = False,
)
Project details
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