Automatic preparation of images for printing
Description
Develop a web service that automatically processes images (PNG/JPG) and prepares them for printing (DTF)
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Goal
To obtain a production-ready file with 1 click.
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Functionality
1. Interface (UI/UX)
Drag & drop upload
Selection of parameters before processing:
physical size (mm / cm)
DPI (default 300)
Process indication (loading / status)
Display warnings:
thin lines (<0.6 mm)
Button:
“Process”
“Download result”
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2. Upload
Formats: PNG, JPG
File size limit (specify, e.g. up to 20MB)
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3. Automatic processing
Normalize
Adjust to 300 DPI
Scale to the selected physical size
Background removal
Remove background (white / complex)
Color conversion
RGB → CMYK
Black = 100K (no mixtures)
Transparency fix
Remove transparency (only 0% / 100%)
Edge fixing
Eliminate white halo
Add bleed (1–2 px)
Thickness check
Detect lines <0.6 mm
Show warning (without auto-correction)
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4. Export
TIFF (CMYK, 300 DPI) — main file
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Technical requirements
Backend: Python (OpenCV / Pillow)
Background removal: rembg or similar
Task queue: Celery + Redis (or similar)
Storage: S3 (or similar)
Frontend: React (or similar)
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Expectations
Processing: 1 click
Time: up to 30 seconds per file
Stable result without artifacts
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Result
Ready web service
Source code
Simple UI for the user
All code and rights transfer to the client.
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Немного не систиковка ты хочешь чтобы все было в браузере это не пайтон а html css и js
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Поки ви писали цей коментар, сервіс уже був повністю реалізований на Python + React з підтримкою масової обробки архівів. Рекомендую оновити знання про сучасні веб-сервіси, зараз уже не 2005-й.
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