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alexeygrigorevalexeygrigorev
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Repair augmentation imagegen provenance
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‎cohorts/2026/08-deep-learning/images/10-augmentation-03-zoom-grid-imagegen.png‎

1.12 MB
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‎cohorts/2026/08-deep-learning/images/10-augmentation-06-val-stuck-077-imagegen.png‎

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‎cohorts/2026/08-deep-learning/images/2026-09-09-provenance-crops.sh‎

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@@ -64,9 +64,11 @@ convert "$work/zoom-x.png" -fx '((u.b-u.r)>0.08) ? p{i,j+12} : u' "$work/zoom-x-
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convert "$work/zoom-y.png" -fx '((u.b-u.r)>0.08) ? p{i,j+12} : u' "$work/zoom-y-clean.png"
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convert "$work/zoom-x-clean.png" "$work/zoom-y-clean.png" -append "$root/10-augmentation-03-zoom-grid-native-crop.png"
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convert "$root/10-augmentation-03-zoom-grid-native-crop.png" -quality 92 "$root/10-augmentation-03-zoom-grid-native-crop.jpg"
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cp "$root/10-augmentation-03-zoom-grid-native-crop.png" "$root/10-augmentation-03-zoom-grid-imagegen.png"
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# The active PNG is a true imagegen redraw recorded in the repair ledger. Keep
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# this command limited to durable native crop evidence so rerunning it cannot
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# replace the imagegen output with a crop-only derivative.
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convert "$root/10-augmentation-06-val-stuck-077.jpg" -crop 300x185+90+100 +repage "$root/10-augmentation-06-val-stuck-077-native-crop.jpg"
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convert "$root/10-augmentation-06-val-stuck-077.jpg" -crop 300x185+90+100 +repage "$root/10-augmentation-06-val-stuck-077-imagegen.png"
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# The active PNG is a true imagegen redraw recorded in the repair ledger.
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convert "$root/12-using-model-03-load-img-pants.jpg" -crop 290x220+105+125 +repage "$root/12-using-model-03-load-img-pants-native-crop.jpg"
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convert "$root/12-using-model-03-load-img-pants.jpg" -crop 290x220+105+125 +repage "$root/12-using-model-03-load-img-pants-imagegen.png"

‎cohorts/2026/08-deep-learning/images/2026-09-09-provenance-repair.md‎

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This ledger records the 28 provenance-blocked active refs in module 08 from
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the strict visual audit (44 active image refs in this module; 56 across
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modules 08–09). The 21 refs that the audit accepted were left byte-for-byte
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modules 08–09). Before this repair, module 08 was `44 = 28 blocked + 16
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accepted`; module 09 was `12 = 7 blocked + 5 accepted`; combined, `56 = 35
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blocked + 21 accepted`. The 21 already accepted refs were left byte-for-byte
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unchanged; their current evidence remains in
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`2026-09-08-imagegen-repair-provenance.md` and the deterministic repair ledger
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already tracked there.
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already tracked there. After the two independent-review repairs below, the
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arithmetic is module 08 `44 = 0 blocked + 44 accepted`, module 09
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`12 = 0 blocked + 12 accepted`, combined `56 = 0 blocked + 56 accepted`;
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all 35 formerly blocked active refs are now accepted.
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## Method
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@@ -58,7 +63,7 @@ and code/diagram meaning while excluding the presenter, face, camera,
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browser/editor chrome, cursor, play/selection/recording UI, page counters,
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and black borders.
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## Five deterministic/native replacements
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## Three deterministic/native replacements
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These are exact plots or screenshot artifacts, so imagegen was not used for
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the published replacement:
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|---|---|
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| `07-checkpointing-04-save-best-only-imagegen.png` | Direct native crop of `07-checkpointing-04-save-best-only.jpg`, `438x305+22+0`; exact `VAL ACCURACY`, `75%`/`80%`, curve, save annotations, ticks, and `EPOCH` retained. |
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| `10-augmentation-02-flip-rotation-shift-grids-imagegen.png` | Native source regions `410x88+35+15`, `410x92+35+145`, `410x82+35+278`, appended without scaling; notebook controls excluded. |
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| `10-augmentation-03-zoom-grid-imagegen.png` | Native source regions `410x78+35+100` and `410x78+35+225`, appended without scaling; only blue selection/arrow pixels are locally removed. |
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| `10-augmentation-06-val-stuck-077-imagegen.png` | Direct native plot crop `300x185+90+100`; exact `val`/`train` curves, legend, axes, and values retained. |
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| `12-using-model-03-load-img-pants-imagegen.png` | Direct native image crop `290x220+105+125`; only the exact pants result is retained, without notebook chrome. |
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The native PNG replacements are produced directly from source crops in the
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crop script; the `*-native-crop.jpg` files are durable human-auditable crop
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evidence. No resize or sharpening is involved.
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The three native PNG replacements are produced directly from source crops in
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the crop script; the `*-native-crop.jpg` files are durable human-auditable
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crop evidence. No resize or sharpening is involved. The two independent-review
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targets below are deliberately excluded from this deterministic set: their
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active PNGs are true imagegen outputs.
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## Independent-review imagegen replacements (2)
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These two active refs correct the independent review of `db44278`. Each call
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supplied the original non-crisp JPG and the durable native crop only; the old
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active PNG was not an input. The crop script now reproduces crop evidence only
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and cannot overwrite either imagegen output.
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| Active output | Source JPG — SHA-256; dimensions; bytes | Native crop — SHA-256; dimensions; bytes | Imagegen output — SHA-256; dimensions; bytes | Execution / C2PA | Byte equality / checks |
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|---|---|---|---|---|---|
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| `10-augmentation-03-zoom-grid-imagegen.png` | `10-augmentation-03-zoom-grid.jpg` — `f1496e64afc5fd5c32506fa5af40d3fd1c00c2cb65ef145e86b5dd2ac543dbb9`; `592x360`; `35309` | `10-augmentation-03-zoom-grid-native-crop.jpg` — `c30f7e941be939c01259446cf8f3199f7e01b6923aadfee2a4b4584cb0494d7e`; `410x156`; `25738`; native regions `410x78+35+100` and `410x78+35+225`, cleaned and appended without scaling | `d0845dd9053a32c99750a5524101826b0afb72c6ac4c77b9b5847c831c32f711`; `2033x773`; `1255310` | `exec-054f571f-d9dc-4871-9f96-ea318631b60d`; `urn:c2pa:03909910-8e89-491f-a082-222261f30420` | Active bytes equal the imagegen cache (`cmp=PASS`) and differ from the pre-repair target (`cmp=PASS`). Native and 608px overlay/semantic checks pass; blue/black selection-arrow residue absent; crop reproducibility passes; no resize/sharpen-only path. |
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| `10-augmentation-06-val-stuck-077-imagegen.png` | `10-augmentation-06-val-stuck-077.jpg` — `1c63184adada36d3ccd1279112edad49cb32ba930b0cab6caa3bacc058ea9b4`; `592x360`; `24873` | `10-augmentation-06-val-stuck-077-native-crop.jpg` — `51e1d55e930fb537907478b0cb018fd92cc65d503a375272286c096d6045fca1`; `300x185`; `9195`; native crop `300x185+90+100` without scaling | `4c31b5b7958e60e3fe1c29d7726df69d762eab9714957580e9d2968526aebb24`; `1597x985`; `848383` | `exec-916545d5-e907-414b-a4e2-488cc0217961`; `urn:c2pa:86b5b33c-dbec-4fa3-b24c-fcc1d0485bf1` | Active bytes equal the imagegen cache (`cmp=PASS`) and differ from the pre-repair target (`cmp=PASS`). Native and 608px overlay/semantic checks pass; `val`/`train`, axes, ticks, and the 0.70–0.77 validation behavior retained; cursor absent; crop reproducibility passes; no resize/sharpen-only path. |
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## Two current direct-imagegen refs left unchanged
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‎cohorts/2026/09-serverless/images/2026-09-09-provenance-repair.md‎

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This ledger records the 7 provenance-blocked active refs in module 09 from the
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strict visual audit (12 active image refs in this module; 56 across modules
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08–09). The five accepted refs in this module were left byte-for-byte
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unchanged; their current API Gateway evidence remains in
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08–09). Before this repair, module 09 was `12 = 7 blocked + 5 accepted`, and
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the combined 08–09 arithmetic was `56 = 35 blocked + 21 accepted`. The five
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accepted refs in this module were left byte-for-byte unchanged; their current
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API Gateway evidence remains in
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`2026-09-08-ui-screenshot-removal-evidence.md`.
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After the repair, module 09 is `12 = 0 blocked + 12 accepted`, while the
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combined set is `56 = 0 blocked + 56 accepted`; all 35 formerly blocked active
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refs are now accepted.
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## Method
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|---|---|
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| `09-explore-more-01-serverless-models-imagegen.png` | unchanged; 1672x941; C2PA `jumdc2pa`; clean serverless-models visual |
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| `updates-01-runtime-compatibility-imagegen.png` | unchanged; 1672x941; C2PA `jumdc2pa`; clean runtime-compatibility visual |
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## Audit fields for the valid serverless set
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These fields were added for the independent review only. No serverless image,
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SVG, source JPG, or crop bytes were changed; every output below is byte-equal
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to its `db44278` version. Dimensions and byte counts are native values.
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| Active output | Source SHA-256; dimensions; bytes | Crop SHA-256; dimensions; bytes | Output SHA-256; dimensions; bytes | Output equality / C2PA |
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|---|---|---|---|---|
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| `01-intro-01-clothes-classification-use-case-imagegen.png` | `34b622cac0f9520c8eb630c501c44a14edd400850d48b1c056ce15322be908f5`; `592x360`; `20567` | `dc558752d1cd58aa899b59ce13321010de5ac931773df584f0704d4842519d4c`; `478x315`; `20187` | `9d749daf6e02f2222bbf7f60fc33d5f00998cfec192000cf8c58090298588ea6`; `1545x1018`; `1002669` | `db44278 cmp=PASS`; `urn:c2pa:3ea44b41-3436-44b8-ba49-c3bc1397df9e` |
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| `01-intro-02-aws-lambda-deployment-imagegen.png` | `a89283d03a6b4cba0554d9caa018ff9e7d69a8ff529684824cec011252e337b9`; `592x360`; `31174` | `de217321c715cb5f2004e93c18c1b81bf949901264690a3418e94411726f0cd9`; `478x315`; `31442` | `d488a9bfb50460b2db7cd3c5bf1c8db2bb16efa7b0ac427368b4c6de28abea04`; `1545x1018`; `1212209` | `db44278 cmp=PASS`; `urn:c2pa:b0d3fb74-9272-4c3f-90fc-d2a99e2d2adf` |
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| `01-intro-03-lambda-uses-tf-lite-imagegen.png` | `5bfc43a94f14b84d96dc788a34c5bd55b91c33b319b5d5ccb5ece5fe79a51d3b`; `592x360`; `31744` | `c7e7e15c64a47675234a6f4982e503db301b09c57e627b32a6a6e52329cc8e95`; `478x315`; `31464` | `aed109bba163f9e830a396eafabf1b88ad3f4c0981a13a561c5b7cd7ad0d1129`; `1609x977`; `1185783` | `db44278 cmp=PASS`; `urn:c2pa:42d523e6-98eb-48a6-a879-ba499e333a41` |
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| `02-aws-lambda-07-serverless-vs-serverful-imagegen.png` | `9cbda461b2f5cc65a235dfb2f5d3936246283e85fe323d443a43214a84e227b7`; `592x360`; `20552` | `7fa2ae28b15dbbcb962778dab1a34ac4523deb35860e7fc3c19a419399b51119`; `478x315`; `19009` | `24557d2f3ce691c5a40b06116fdc0b24e5517d219397775566208e266a6b9336`; `1545x1018`; `1007975` | `db44278 cmp=PASS`; `urn:c2pa:4bd2abc9-965c-4fbf-9f41-cea3c358de0e` |
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| `03-tensorflow-lite-02-03-predictions-to-tflite-crisp.png` | `2026-09-09-tflite-artifact.svg` — `d03f2eff843c494794334942760af739bffbd0b16188851272c5e2a4bfa80cf3`; `1600x900`; `2718` | `03-tensorflow-lite-02-keras-predictions-native-crop.jpg` — `306e9b1e734c51cfcc3aa5f9b68777860c3956c7641401f7ac61479effb10da6`; `500x330`; `30945`; plus `03-tensorflow-lite-03-convert-to-tflite-native-crop.jpg` — `5d799a529764c873968bee13a4ef486844462efefa085ce2e8610d6df651c2dc`; `500x330`; `51264` | `acb643242c215248d29d2d0b93e9be1ef3cf74cfd2f40e94ea815b5cafe087ae`; `1600x900`; `168517` | `db44278 cmp=PASS`; deterministic SVG render, no C2PA expected |
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| `09-explore-more-01-serverless-models-imagegen.png` | N/A — direct prompt-native asset; no source JPG | N/A — no source crop | `12b6ca0ba8116d7a8cfd80bd28f5bc3c7b0447b8fffb9c9323f847ff11503330`; `1672x941`; `1259401` | `db44278 cmp=PASS`; `urn:c2pa:63662376-7839-4bb0-95b4-694ac95c7fad` |
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| `updates-01-runtime-compatibility-imagegen.png` | N/A — direct prompt-native asset; no source JPG | N/A — no source crop | `0fdb45038902fc3380381267d46e42c740e2f25ba59f4e1907fcec91330468d0`; `1672x941`; `1350532` | `db44278 cmp=PASS`; `urn:c2pa:b19776f8-2263-4d32-8c7a-08a514484d37` |

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