Resources Contact Us Home
Method and system for human vision model guided medical image quality assessment

Image Number 2 for United States Patent #8086007.

A method and system for image quality assessment is disclosed. The image quality assessment method is a no-reference method for objectively assessing the quality of medical images. This method is guided by the human vision model in order to accurately reflect human perception. A region of interest (ROI) of medical image is divided into non-overlapping blocks of equal size. Each of the blocks is categorized as a smooth block, a texture block, or an edge block. A perceptual sharpness measure, which is weighted by local contrast, is calculated for each of the edge blocks. A perceptual noise level measure, which is weighted by background luminance, is calculated for each of the smooth blocks. A sharpness quality index is determined based on the perceptual sharpness measures of all of the edge blocks, and a noise level quality index is determined based on the perceptual noise level measures of all of the smooth blocks. An overall image quality index can be determined by using task specific machine learning of samples of annotated images. The image quality assessment method can be used in applications, such as video/image compression and storage in healthcare and homeland security, and band-width limited wireless communication.

  Recently Added Patents
Modular connector for touch sensitive device
Address generation unit for accessing a multi-dimensional data structure in a desired pattern
Preserving user applied markings made to a hardcopy original document
Treatment of cancer using the sodium salt of a benzoic acid derivative
Wind turbine
Interference suppressing OFDM system for wireless communications
Stack and folding-typed electrode assembly and method for preparation of the same
  Randomly Featured Patents
Approach to extending life of gas turbine engine
Apparatus and method for depositing and reflowing solder paste on a microelectronic workpiece
Process and apparatus for the production of hydrogen and carbon dioxide from the gasification of raw materials
Apparatus and method for digital phase control of a pulse width modulation generator for microprocessor/DSP in integrated circuits
Supported metallocene-alumoxane catalysts for the preparation of polyethylene having a broad monomodal molecular weight distribution
Cutting tool holder with strain gauge displacement indicator
Individual package and method of manufacturing the same
Receiver hardware for percussive musical instruments
Filtering shared content
Plastics trim press sheet feeding mechanisms