Straighten and Scan Document or Whiteboard Photo

📸 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)