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Possibility of channel-by-channel image normalization when adding metadata

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#968 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
25/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
cpp, tensorflow

Research direction

The reported entry point is metadata verification in MediaPipe Studio, where per-channel image normalization currently fails. Start by tracing that verification and graph-start path; done means metadata with separate mean and std values for each channel verifies successfully and the graph starts.

Written by the indexing model from the issue text.

Description

My model is trained on a certain mean and std:
mean = [151.2405, 119.5950, 107.8395]
std = [63.0105, 56.4570, 55.0035]
The problem is that the attempt to add these values to the metadata fails at the verification stage in mediapipe studio: "Error: UNIMPLEMENTED: Per-channel image normalization is not available.; Initialize was not ok; StartGraph failed."
Did I understand correctly that there is no possibility of channel-by-channel normalization? Are there any plans to add it? Unfortunately, if I normalize all channels with one number, the quality of my model deteriorates significantly.

Dominant language
C++
Stars
442
Forks
145
PR merge metrics
No merged PRs in 30d

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