کاهش رنگ نقشه‌های دستی فرش پیش از نقطه‌گذاری
الموضوعات :
منصور فاتح
1
(دانشگاه تربیت مدرس)
احسان‌اله کبیر
2
(دانشگاه تربیت مدرس)
الکلمات المفتاحية: کاهش رنگ نقشه دستی نقطه‌گذاری مرزبندی بخش‌بندی C- میانگین قالی فرش,
ملخص المقالة :
نقشه‌های فرش شامل دو دسته چاپی و دستی هستند و نقشه‌های دستی نیز به دو گروه پیش و پس از نقطه‌گذاری تقسیم می‌شوند. هدف این تحقیق، کاهش رنگ در نقشه‌های دستی پیش از نقطه‌گذاری است. مقالات گوناگونی درباره کاهش رنگ در نقشه‌های فرش پس از نقطه‌گذاری وجود دارد اما تا کنون مقاله‌ای در باب کاهش رنگ در نقشه‌های دستی پیش از نقطه‌گذاری ارائه نشده است. الگوریتم پیشنهادی از 4 مرحله اصلی تشکیل شده است: تعیین نواحی تصویر، مشخص‌کردن رنگ هر ناحیه، کاهش رنگ در حوالی مرزهای تصویر و کاهش رنگ نهایی با روش C- میانگین. برای 80 قسمت از 20 نقشه مختلف، دقت الگوریتم حدود 96 درصد است، به عبارت دیگر رنگ 96 درصد از پیکسل‌های تصویر به درستی تعیین شده و دقت بالای این روش به دلیل متناسب‌بودن روش پیشنهادی با کاربرد آن است. روش ارائه‌شده در این مقاله کاملاً خودکار نیست و تعداد رنگ‌های نقشه باید توسط کاربر به عنوان ورودی به الگوریتم داده شود.
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