Enhance and clean a hand-drawn electrical routing plan made with pencil on paper. Requirements: • Convert background to pure clean white (no shadows, paper texture, noise, or gradients) • Preserve the exact original layout, proportions, and structure of the drawing • Do NOT move, add, or remove any elements Line processing: • Keep all original lines, but enhance them to be sharp, straight, and clearly visible • Remove breaks: all lines must be continuous and logically completed • Maintain hierarchy: • Walls (room boundaries) — bold, dark black lines • Electrical routes — medium grey pencil-style lines • Keep the natural pencil look, but make it cleaner and more precise (engineering style) Points and symbols: • Ensure every line ends with a clear, consistent dot • All endpoint dots must be uniform in size and style across the drawing • Preserve all symbols exactly as drawn Special requirement: • Red dots (top-view groove / “штроба”) must be preserved and clearly highlighted in saturated red color • Do not change their position, size logic, or meaning Text: • Preserve all handwritten labels and annotations • Improve readability and sharpness without changing the content or style • Do not replace text with typed fonts Final style: • Clean, high-contrast technical drawing • Minimal noise, professional engineering look • Visually similar to a carefully digitized manual sketch Negative instructions: • No stylization • No redesign • No interpretation • No added elements • No removal of existing details
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