Replace the two-pass closed-form deskew (getPerspectiveTransform +
per-axis scale corrections) with an alternating-minimisation loop around
cv.findHomography (internal Levenberg–Marquardt). Each outer iteration
recomputes per-datum point correspondences from the current H and the
datum's shape constraint, then findHomography refines H. Confidence
drives per-correspondence replication; primary gets a 3× gauge boost.
- Add EllipseDatum type (center + two conjugate semi-axis endpoints +
known diameter) with 3-handle Konva rendering and coin presets.
- Generalise primary selection to any datum type. Priority rect >
ellipse > line; within type, confidence then image size. Warm-start
anchors: rect = 4 axis-aligned corners; ellipse = 4 conjugate-axis
samples on a world circle; line = 2 endpoints + 2 synthetic
perpendicular points (isotropic image-scale assumption).
- Direction-agnostic shape residuals: Procrustes-fit ideal (w × h) rect
to projected corners; midpoint-preserving line rescale; radial-snap
ellipse samples to a circle at projectPoint(H, center).
- Drop the "at least one rectangle" requirement. Any datum combination
works; diagnostics widgets auto-pick a scale reference across types.
- Diagnostics: replace X/Y axis-correction cards with RMS residual +
iteration count; per-datum table shows a residual breakdown column
(edge %, perp Δ°, iso/skew/dia).
- Detect period-2 oscillation in the outer loop and warn to console.
- Relative convergence threshold so the affine and perspective entries
of H are weighted comparably.
- Guard diagnostic diameter via geometric-mean-radius for non-circular
conics; guard collinear-axes ellipses; fix Mat leak in
solveHomography on the exception path.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Accept any browser-supported image type (png, webp, gif, …) in addition
to jpg and heic on the upload step.
- Add a swap button between the width and height inputs on rectangle
datums so users can flip dimensions with one click.
- Block the Next action on the datum step when a rectangle has crossed
corners (top below bottom or right left of left), and surface which
datums need fixing in the tooltip.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Replace placeholder with OpenCV.js WASM perspective correction:
pick highest-confidence rectangle, compute homography, fold
weighted scale corrections from secondary datums, single warpPerspective
- All units now mm throughout (no cm conversion)
- Simplified datum creation: two buttons (+ Rectangle / + Line) with
preset chips, auto-numbered labels (Line 1, Rectangle 2, etc.)
- Dimensions default to 0, user must input manually; Next button
disabled until all datums have valid dimensions with tooltip hint
- Fix image preview (keep object URL alive), fix canvas disappearing
on breakpoint switch (single instance + ResizeObserver re-fit)
- Mobile responsive: bottom sheet for datum panel, full-width canvas
- Spinner on result screen during processing
- Stricter ESLint config, updated Prettier to 4-space/no-semicolons
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Vue 3 + Vite + TypeScript (strict) app with shadcn-vue, Konva.js canvas,
and Pinia. 4-step wizard: upload JPG/HEIC, view EXIF, place datum
measurements (rectangles/lines with presets), run deskew (placeholder).
Dark mode, mobile-responsive with bottom sheet for datum panel.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
