Editable📸 INPUT REFERENCE: Use the uploaded photo as the base —
preserve every word, line, diagram, and mark on the document
or whiteboard exactly as written, with zero alteration to actual
content, text or numbers
📐 PERSPECTIVE CORRECTION TASK: Detect the four corners of the
document, page, or whiteboard in the photo and digitally
straighten it into a perfectly flat, front-facing rectangular
view, eliminating any skew, tilt, trapezoid distortion, or
curved-page warping caused by the original camera angle
🔲 CROP & ALIGN: Crop tightly to the edges of the document or
whiteboard, removing surrounding background (desk, hands, wall)
unless specifically requested to keep margin context
💡 LIGHTING & GLARE CORRECTION: Remove uneven lighting, shadows
cast across the page, and glare or reflection spots (common with
glossy whiteboards or glossy paper) so the entire surface is
evenly and clearly lit
⚫ CONTRAST ENHANCEMENT: Sharpen text and line clarity, increase
contrast between background (paper/whiteboard) and ink/marker
so content is crisp and easy to read, similar to a professional
scanner output
🎨 COLOR NORMALIZATION: Correct the background to a clean,
neutral white or whiteboard-accurate tone, removing yellow
tint, shadow gradients or color cast from ambient lighting
🖌️ STYLE: Photorealistic scan-quality correction — final result
must look like a professionally scanned document, not a
distorted phone photo
🚫 CONTENT PRESERVATION: Never alter, add, remove, or reinterpret
any actual written text, numbers, or drawn content — geometry
and lighting correction only
📐 ASPECT RATIO: Rectangular, matching corrected document/
whiteboard proportions (typically 1:1.41 or as detected)
