رئوس مطالب
- چکیده
- کلیدواژه ها
- 1.مقدمه
- 2. نمودار جریان الگوریتم افزایش وضوح
- 3.لزوم افزایش وضوح تصویر
- 1.3: افزایش وضوح بر مبنای تبدیل موجک گسسته
- 2.3: افزایش وضوح بر مبنای تبدیل موجک ایستا
- 3.3:روش‌های افزایش وضوح
- 4.3: روش افزایش وضوح تصویر با استفاده از تبدیل موجک گسسته و ایستا
- 4.افزایش کیفیت تصویر
- 1.4: افزایش خودکار کیفیت تصویر
- 2.4: عملیات‌های نقطه‌ای
- 3.4: صافی‌های خطی
- 5.درون‌یابی
- 6.روش پیشنهادی
- 7.نتایج و مباحث
- 8.نتیجه‌گیری
Abstract
Display resolution sizes are increasing uncontrollably. Imaging system resolution is not catching up with the display technology; this highlights the need for resolution enhancement methods. In this paper we have proposed new method for super resolution. The proposed method uses SWT and DWT high frequency sub bands. PSNR is used as quality measure to compare the proposed method with other methods. Proposed method proves to be superior to other state of the art super resolution methods.
Keywords: stationary and discrete wavelet - super resolution - wavelet transformConclusions
This paper has proposed a new method for obtaining super resolution images from low resolution images. The proposed method is much better than previous methods. We have also provided subjective and objective comparison of the resultant images. Proposed method involves calculation of DWT sub bands. High frequency sub bands are interpolated to double their size. DWT loses some information in the process of interpolation; it is corrected with the help of SWT. IDWT with original image and high frequency components give super resolution image. We have compared proposed method with state of the art methods. PSNR table shows the superiority of the proposed method.