Patent
Method for image processing by unsharp masking
Tzu-Hung Cheng
- 17 Sep 2003
7
TL;DR: In this article, a method for adjusting an image signal by a processor includes providing a first low pass filter and a second low-pass filter, generating an energy ratio of a band-pass image signal and the image signal according to the standard deviation of a low pass signal.
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Abstract: A method for adjusting an image signal by a processor includes providing a first low pass filter and a second low pass filter, generating an energy ratio of a band-pass image signal and the image signal according to the standard deviation of a first low pass signal of the first low pass filter and a second low pass signal of the second low pass filter, providing an image adjustment parameter and generating a weighting coefficient of the image signal according to the energy ratio and the image adjustment parameter, generating a third low pass filter according to the weighting coefficient of the image signal, the image adjustment parameter, the first low pass signal of the first low pass filter and the second low pass signal of the second low pass filter, and adjusting the image signal according to the image signal and the third low pass filter.
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Citations
Patent
Visual processing device, visual processing method, program, display device, and integrated circuit
Yusuke Monobe,Haruo Yamashita,Takeshi Ito +2 more
- 27 Mar 2007
TL;DR: In this paper, a visual processing device is provided with a spatial processing portion extracting surrounding image information US from an input image signal IS, and a special image detection portion outputting a special effect adjustment signal DS according to a degree of a statistical bias of the image signal.
47
Patent
Digital image combining to produce optical effects
Hau Hwang,Hsiang-Tsun Li,Kalin Mitkov Atanassov +2 more
- 03 Dec 2010
TL;DR: In this article, the spectral densities of at least two images at different effective lens focal lengths were estimated using high pass filtering and low pass filtering, prior to combining them into a single image to produce one or more optical effects.
24
Patent
Visual processing apparatus, visual processing method, program, recording medium, display device, and integrated circuit
Takeshi Ito,Haruo Yamashita,Yusuke Monobe +2 more
- 03 Apr 2007
TL;DR: In this article, a visual processing apparatus capable of preventing side effects even if an image including a steep edge region has been inputted is presented, which comprises a space processing section (10) for outputting periphery image information (US) from an input image signal, a control signal generating section (40), and an effect adjustment signal (MOD) depending on the flatness of an edge-near region.
16
Patent
Method and Apparatus for Content Adaptive Sharpness Enhancement
Oscar Ayzenberg
- 14 Dec 2009
TL;DR: In this article, a method and apparatus for adaptive sharpness enhancement of image data is presented. But the method is not suitable for the first frame of a video and the blending parameters may be generated based on the image data of the first frames, the linear sharpened image data, and the non-linear sharpened data.
13
Patent
Visual processing device, display device, visual processing method, program, and integrated circuit
Haruo Yamashita,Takeshi Ito,Yusuke Monobe +2 more
- 20 Dec 2010
TL;DR: In this article, a visual processing device, display device, visual processing method, program, and integrated circuit that change a strength of visual processing of an image in real-time.
10
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TL;DR: In this paper, a three color signal produced by an electronic color images sensor, such as the Kodak KAF-1400 sensor with a 3G CFA filter, and performing additive-type color correction processing in a linear domain suitable for performing additive type color correction is presented.
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Pieter Paul Vuylsteke,Emile Schoeters +1 more
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TL;DR: In this article, a method and apparatus for enhancing the contrast of a digital image by decomposing the original image into a sequence of detail images or into an array of coefficients representing detail strength at multiple resolution levels and a residual image was disclosed.
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Patent
Image processing method and apparatus
Miyazaki Yuki
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TL;DR: A page printer (100) embodying the present invention stores form data received from a host computer (300) into a RAM (101) before printing output Upon mapping of the input code data, whether the necessary pattern is stored in a cache memory or not is examined, and if it is not stored, the pattern is registered as mentioned in this paper.
122
Patent
Method for adaptively sharpening electronic images
Woo-Jin Song
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TL;DR: In this article, an adaptive amplification factor for the high frequency components is determined as a function of a variance of the pixel values surrounding a pixel and the noise power of the imaging system.
76
Patent
Image processing method and apparatus
Kimitoshi Nagao
- 30 Sep 2003
TL;DR: In this paper, the sharpness of photographic images recorded by a silver halide photographic system or a digital still camera was enhanced by a method and apparatus to determine a blur retaining but sharpness enhancing coefficient for enhancing sharpness in an edge region of an object but retaining blur of the image in the other region of the edge region.
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