7. 73
RGB Grayscale
GeneratorG
U-net
Discriminator
Normal Data
Real or Fake
Real pair Fake pair
Convert
Model Training (Pix2pix learns color reconstruction)
RGB Grayscale
Unseen Data
Convert
Anomaly Detection
Pix2pix Color Reconstructor
Reconstructed by pix2pix
CIEDE 2000 Color Difference
Anomalies
Reconstruct
Ig<latexit sha1_base64="ypjdIlUEGv+lS4tVsJCqaFPjI9M=">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</latexit>
Ic<latexit sha1_base64="i9s61+eQmGTKGkZo5a4UNkUnBpo=">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</latexit>
G(Ig)<latexit sha1_base64="RxhJHYxaev/TJTHPge/qWgb1lD8=">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</latexit>
Ig<latexit sha1_base64="ypjdIlUEGv+lS4tVsJCqaFPjI9M=">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</latexit>
Ig<latexit sha1_base64="ypjdIlUEGv+lS4tVsJCqaFPjI9M=">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</latexit>
Ic<latexit sha1_base64="i9s61+eQmGTKGkZo5a4UNkUnBpo=">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</latexit>
ˆI0
c<latexit sha1_base64="M2glWKhKK6TfvUibMihNJotcM+I=">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</latexit>
I0
c<latexit sha1_base64="vQGyz5r2ndomxqKInXuPP4SrreA=">AAACb3ichVHLSsNAFD2Nr1ofrbpQEKRYfG3KpAqKq4Ib3bXV2oKVksRRh6ZJSNJCDf0BP0AXLnyAiPgZbvwBF36CuBIFNy68SQuiot6QmTNn7rlzZq5q6cJxGXsISR2dXd094d5IX//AYDQ2NLzpmDVb43nN1E27qCoO14XB865wdV60bK5UVZ0X1MqKv1+oc9sRprHhNiy+XVX2DLErNMUlqlRSTX3HW5tplrVIOZZgSRZE/CeQ2yCBdmTM2BVK2IEJDTVUwWHAJaxDgUPfFmQwWMRtwyPOJiSCfY4mIqStURanDIXYCo17tNpqswat/ZpOoNboFJ1+m5RxTLF7ds1e2B27YY/s/ddaXlDD99KgWW1puVWOHo6tv/2rqtLsYv9T9adnF7tYCrwK8m4FjH8LraWvHxy/rC/nprxpdsGeyP85e2C3dAOj/qpdZnnuBH4D5O/P/RNsppLyfDKVXUikM+lWK8IYxyRm6b0XkcYqMsjTuRaOcIqz0LM0Kk1I8VaqFGq3bwRfQpr7ADZCjnE=</latexit>
˜Ic<latexit sha1_base64="JkflUb1+jftzL6t7L1IVfhRLFIE=">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</latexit>
Ic Ig
Ic Ig
G : Ig ↦ Ic
Ic Ig true
Ic G(Ig) fake
D
8. 84
G(x)
x
y
x
RGB Grayscale
Unseen Data
Convert
Anomaly Detection
Pix2pix Color Reconstructor
Reconstructed by pix2pix
CIEDE 2000 Color Difference
Anomalies
Reconstruct
ˆI0
c<latexit sha1_base64="M2glWKhKK6TfvUibMihNJotcM+I=">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</latexit>
I0
c<latexit sha1_base64="vQGyz5r2ndomxqKInXuPP4SrreA=">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</latexit>
˜Ic<latexit sha1_base64="JkflUb1+jftzL6t7L1IVfhRLFIE=">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</latexit>
G
I′c
̂I′c
di I′c(xi) ̂I′c(xi)
˜Ic
,