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Some models require preprocessing done to the data before inference. Usually it's done with packages like numpy or pillow for images, but it adds dependencies and additional steps to the inference pipeline, not to mention that these steps may not be properly performant.
PrePostProcessor module allows users to define such preprocessing steps (also postprocessing if you need it), and then embed it into the graph. It not only fixes the issues mentioned above, but also allows OpenVINO graph transformations and performance improvements to take place, increasing overall inference performance.
Lately there has been a request for a new PrePostProcessor operation - Clamp: #23001. The issue contains information relevant to the task, it's recommended to read it.
Context
Some models require preprocessing done to the data before inference. Usually it's done with packages like
numpy
orpillow
for images, but it adds dependencies and additional steps to the inference pipeline, not to mention that these steps may not be properly performant.PrePostProcessor
module allows users to define such preprocessing steps (also postprocessing if you need it), and then embed it into the graph. It not only fixes the issues mentioned above, but also allows OpenVINO graph transformations and performance improvements to take place, increasing overall inference performance.Lately there has been a request for a new
PrePostProcessor
operation -Clamp
: #23001. The issue contains information relevant to the task, it's recommended to read it.What needs to be done?
Clamp
operation. It should most likely be placed inPreProcessSteps
section at https://github.com/openvinotoolkit/openvino/blob/master/src/core/src/preprocess/pre_post_process.cpp#L257.The implementation is preferred to use existing OpenVINO operators - in this case we have a perfect operator for that: https://docs.openvino.ai/2024/documentation/openvino-ir-format/operation-sets/operation-specs/activation/clamp-1.html
3. Add tests to https://github.com/openvinotoolkit/openvino/blob/master/src/core/tests/preprocess.cpp
Example Pull Requests
Resources
Contact points
@p-wysocki
Ticket
N/A
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