The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2018
Filed:
Dec. 02, 2014
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Yoshimitsu Murahashi, Osaka, JP;
Masaaki Moriya, Osaka, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A resolution estimating device is achieved which is capable of adequately estimating the resolution of the original image of any received image signal. A resolution estimating device () includes a proximity-degree acquiring unit (), an accumulation unit (), a frequency transform unit (), and a spectrum analyzing unit (). The proximity-degree acquiring unit () acquires the proximity degree value of each target pixel. The accumulation unit () accumulates the proximity degrees of the target pixels, for example, in the vertical direction on the image, and obtains a one-dimensional data sequence of the accumulated proximity degree values. The frequency transform unit () performs a frequency transform on the one-dimensional data sequence of the accumulated proximity degree values obtained by the accumulation unit (), and obtains a one-dimensional frequency-component data sequence which is a one-dimensional data sequence for frequency regions. The spectrum analyzing unit () detects periodicity, for example, in the horizontal direction on a proximity degree image on the basis of the one-dimensional frequency-component data sequence obtained by the frequency transform unit (), and estimates the resolution of the original image, which is an image before a scaling-up process, of an input image on the basis of the detected periodicity.