A New Approach to the Image Resizing Using Interpolating Rational - Linear Splines by Continued Fractions ?
نویسندگان
چکیده
This paper proposes a new image resizing method based on splines, which is constructed by the Thieletype continued fractions and the Newton interpolation. Like most interpolation techniques proposed in the past, this paper focuses on determining pixel values using the relationship between neighboring points. The interpolation is carried out by choosing the osculatory interpolants in every subinterval effectively. The small image details and step edges are preserved based on the proposed interpolation method. The simulations indicate that this method achieves better image results than those by conventional methods in terms of error, PSNR and image quality performance.
منابع مشابه
Accuracy improvement of Best Scanline Search Algorithms for Object to Image Transformation of Linear Pushbroom Imagery
Unlike the frame type images, back-projection of ground points onto the 2D image space is not a straightforward process for the linear pushbroom imagery. In this type of images, best scanline search problem complicates image processing using Collinearity equation from computational point of view in order to achieve reliable exterior orientation parameters. In recent years, new best scanline sea...
متن کاملA FILTERED B-SPLINE MODEL OF SCANNED DIGITAL IMAGES
We present an approach for modeling and filtering digitally scanned images. The digital contour of an image is segmented to identify the linear segments, the nonlinear segments and critical corners. The nonlinear segments are modeled by B-splines. To remove the contour noise, we propose a weighted least q m s model to account for both the fitness of the splines as well as their approximate cur...
متن کاملImproved Content Aware Image Retargeting Using Strip Partitioning
Based on rapid upsurge in the demand and usage of electronic media devices such as tablets, smart phones, laptops, personal computers, etc. and its different display specifications including the size and shapes, image retargeting became one of the key components of communication technology and internet. The existing techniques in image resizing cannot save the most valuable information of image...
متن کاملEdge-preserving image resizing using modified B-splines
An edge-preserving method for image resizing (decimation and interpolation) is proposed. The decimation is considered as an orthogonal projection with respect to the chosen interpolation basis. The latter one is formed in a spline-like manner as a linear combination of B-splines of different degrees. This combination is optimized in such a way that the small image details are preserved. Conside...
متن کاملNew approach for attenuation correction in SPECT images, using linear optimization
Background: Photon attenuation as an inevitable physical phenomenon influences on the diagnostic information of SPECT images and results to errors in accuracy of quantitative measurements. This can be corrected via different physical or mathematical approaches. As the correction equation in mathematical approaches is nonlinear, in this study a new method of linearization called ‘Piece ...
متن کامل