perf: New revision code formula model and document picture classifier (#1140)

* new version code formula model

Signed-off-by: Matteo-Omenetti <Matteo.Omenetti1@ibm.com>

* new version document picture classifier

Signed-off-by: Matteo-Omenetti <Matteo.Omenetti1@ibm.com>

* new code formula model

Signed-off-by: Matteo-Omenetti <Matteo.Omenetti1@ibm.com>

* restored original code formula test pdf

Signed-off-by: Matteo-Omenetti <Matteo.Omenetti1@ibm.com>

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Signed-off-by: Matteo-Omenetti <Matteo.Omenetti1@ibm.com>
Co-authored-by: Matteo-Omenetti <Matteo.Omenetti1@ibm.com>