استخراج ویژگی طیفی ـ مکانی با استفاده از تحلیل طیفی تکین سه بعدی برای طبقه بندی تصاویر ابرطیفی

مهندسی مخابرات جنوب

دوره 12، شماره 47، فروردین 1402، صفحه 37-52   

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.30495/jce.2023.1972096.1176

نویسندگان

احسان دشتی فرد¹؛ آذر محمودزاده^{* 2}؛ احمد کشاورز³؛ حامد آگاهی⁴

¹گروه برق، واحد شیراز، دانشگاه آزاد اسلامی، شیراز، ایران

²گروه برق، واحد شیراز، دانشگاه آزاد اسلامی، شیراز، ایران

³گروه مهندسی برق، دانشکده مهندسی سیستمهای هوشمند و علوم داده، دانشگاه خلیج فارس، بوشهر، ایران

⁴گروه برق، واحد شیراز، دانشگاه آزاد اسلامی، شیراز، ایران

چکیده

استخراج ویژگی دارای نقشی ارزنده در پردازش تصاویر ابرطیفی است. در سالهای اخیر روشهای گوناگونی برای استخراج ویژگیهای کارآمد تصاویر ابر طیفی ارائه شده است. اخیرا تحلیل طیفی تکین شامل ویرایش معمولی آن در حوزه طیفی و تحلیل طیفی تکین دو بعدی در حوزه مکانی با موفقیت برای استخراج ویژگی در تصاویر ابرطیفی بکار گرفته شده است. با این حال عدم توفیق در استخراج ویژگیهای مؤثر طیفی ـ مکانی مشترک به عنوان یکی از اشکالات این دو الگوریتم به شمار می رود. در این مقاله برای غلبه بر این اشکال، یک توسعه سه بعدی از تحلیل طیفی تکین ارائه شده است. اعمال مدل پیشنهادی به تصاویر ابرطیفی منجر به حذف مؤلفه های نویزی شده و توانایی تشخیص ویژگیها بسیار بهبود می یابد. در این پژوهش، از دو مجموعه داده در دسترس عموم برای انجام آزمایشها استفاده شده است. نتایج آزمایشگاهی نشان می دهد که روش پیشنهادی ما عملکرد امیدوار کننده ای دارد به گونه ای که روی مجموعه داده ابرطیفی ایندیانا و دانشگاه پاویا به ترتیب دقت طبقه بندی حداقل 1/93% و 1/27% را در مقایسه با سایر روشهای اخیر کسب نموده است.

کلیدواژه‌ها

استخراج ویژگی؛ تصویر ابرطیفی؛ تحلیل طیفی تکین سه بعدی؛ طبقه بندی؛ طیفی ـ مکانی

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