JP2013034660A5 - - Google Patents

Download PDF

Info

Publication number
JP2013034660A5
JP2013034660A5 JP2011173066A JP2011173066A JP2013034660A5 JP 2013034660 A5 JP2013034660 A5 JP 2013034660A5 JP 2011173066 A JP2011173066 A JP 2011173066A JP 2011173066 A JP2011173066 A JP 2011173066A JP 2013034660 A5 JP2013034660 A5 JP 2013034660A5
Authority
JP
Japan
Prior art keywords
histogram
image processing
image
pixel
pixel value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2011173066A
Other languages
Japanese (ja)
Other versions
JP2013034660A (en
JP5784408B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2011173066A priority Critical patent/JP5784408B2/en
Priority claimed from JP2011173066A external-priority patent/JP5784408B2/en
Publication of JP2013034660A publication Critical patent/JP2013034660A/en
Publication of JP2013034660A5 publication Critical patent/JP2013034660A5/ja
Application granted granted Critical
Publication of JP5784408B2 publication Critical patent/JP5784408B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Claims (7)

画像を含む情報を読み込む情報入力部と、前記画像に対して画像処理を実行する画像処理部と、前記画像処理部により処理された画像を出力し表示する画像表示部を備える医用画像処理装置であって、
読み込んだ前記画像の各画素値と該各画素値に対応する度数を基に該画像全体のヒストグラム作成する手段と、
前記ヒストグラムにおいて第１ヒストグラム領域と前記第１ヒストグラム領域の各画素が有する画素値より低い画素値を有する第２ヒストグラム領域とに分割する際の基準値となる閾値を決定する手段と、
決定した前記閾値を用いて、前記画像の各画素に対して前記第１ヒストグラム領域における重みと、前記第２ヒストグラム領域における重みとを、それぞれ決定する手段と、
決定した前記重みを前記第１ヒストグラム領域における前記画素の各画素値に付加して、前記画像のコントラスト強調を実行する手段とを備えることを特徴とする医用画像処理装置。 A medical image processing apparatus comprising: an information input unit that reads information including an image; an image processing unit that performs image processing on the image; and an image display unit that outputs and displays an image processed by the image processing unit. There,
Means for creating a histogram of the entire image based on each pixel value of the read image and the frequency corresponding to the pixel value;
Means for determining a threshold value serving as a reference value when dividing the histogram into a first histogram area and a second histogram area having a pixel value lower than a pixel value of each pixel of the first histogram area;
Means for respectively determining a weight in the first histogram region and a weight in the second histogram region for each pixel of the image using the determined threshold;
A medical image processing apparatus comprising: means for adding the determined weight to each pixel value of the pixel in the first histogram region to perform contrast enhancement of the image. 前記閾値を決定する手段は、前記第２ヒストグラム領域における重みを“１”とし、当該領域に対しては前記各画素にコントラスト強調を加えないことを特徴とする請求項１に記載の医用画像処理装置。   2. The medical image processing according to claim 1, wherein the means for determining the threshold value sets the weight in the second histogram area to “1” and does not add contrast enhancement to the pixels for the area. apparatus. 前記第１ヒストグラム領域における重みは、前記閾値における画素値に対して決定されるコントラスト強調度を基に調整されることを特徴とする請求項１に記載の医用画像処理装置。   The medical image processing apparatus according to claim 1, wherein the weight in the first histogram region is adjusted based on a contrast enhancement degree determined for a pixel value in the threshold value. 前記コントラスト強調度は、前記入力部から操作者により入力された情報を基に決定されることを特徴とする請求項３に記載の医用画像処理装置。   The medical image processing apparatus according to claim 3, wherein the contrast enhancement degree is determined based on information input by an operator from the input unit. 前記コントラスト強調度は、前記画像処理部に予め設定された情報を基に決定されることを特徴とする請求項３に記載の医用画像処理装置。   The medical image processing apparatus according to claim 3, wherein the contrast enhancement degree is determined based on information preset in the image processing unit. 前記閾値を決定する手段は、前記第１ヒストグラム領域における最大値をとる画素値に対して、前記第１ヒストグラム領域における重みを“１”とし、当該最大値を有する画素値が保存されることを特徴とする請求項１に記載の医用画像処理装置。   The means for determining the threshold value sets the weight in the first histogram area to “1” for the pixel value having the maximum value in the first histogram area, and stores the pixel value having the maximum value. The medical image processing apparatus according to claim 1, wherein: 画像を含む情報を読み込む情報入力部と、前記画像に対して画像処理を実行する画像処理部と、前記画像処理部により処理された画像を出力し表示する画像表示部を備える医用画像処理装置を用いた医用画像処理方法であって、
読み込んだ前記画像において第１ヒストグラム領域と前記第１ヒストグラム領域の各画素が有する画素値より低い画素値を有する第２ヒストグラム領域とに分割する際の基準値となる閾値を決定するステップと、
読み込んだ前記画像の各画素値と該各画素値に対応する度数を基に該画像全体のヒストグラム作成するステップと、
決定した前記閾値を用いて、前記画像の各画素に対して前記第１ヒストグラム領域における重みと、前記第２ヒストグラム領域における重みとを、それぞれ決定するステップと、
決定した前記重みを前記第１ヒストグラム領域における前記画素の各画素値に付加して、前記画像のコントラスト強調を実行するステップとを備えることを特徴とする医用画像処理方法。 A medical image processing apparatus comprising: an information input unit that reads information including an image; an image processing unit that performs image processing on the image; and an image display unit that outputs and displays an image processed by the image processing unit. A medical image processing method used,
Determining a threshold value serving as a reference value for dividing the first histogram region into a second histogram region having a pixel value lower than that of each pixel of the first histogram region in the read image;
Creating a histogram of the entire image based on each pixel value of the read image and the frequency corresponding to each pixel value;
Determining a weight in the first histogram region and a weight in the second histogram region for each pixel of the image using the determined threshold;
Adding the determined weight to each pixel value of the pixel in the first histogram region, and executing contrast enhancement of the image.
JP2011173066A 2011-08-08 2011-08-08 Medical image processing apparatus and medical image processing method Expired - Fee Related JP5784408B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011173066A JP5784408B2 (en) 2011-08-08 2011-08-08 Medical image processing apparatus and medical image processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011173066A JP5784408B2 (en) 2011-08-08 2011-08-08 Medical image processing apparatus and medical image processing method

Publications (3)

Publication Number Publication Date
JP2013034660A JP2013034660A (en) 2013-02-21
JP2013034660A5 true JP2013034660A5 (en) 2014-07-17
JP5784408B2 JP5784408B2 (en) 2015-09-24

Family

ID=47884865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011173066A Expired - Fee Related JP5784408B2 (en) 2011-08-08 2011-08-08 Medical image processing apparatus and medical image processing method

Country Status (1)

Country Link
JP (1) JP5784408B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11295487B2 (en) * 2018-09-07 2022-04-05 Canon Medical Systems Corporation X-ray CT apparatus, medical image processing apparatus, and X-ray CT system
CN114340499A (en) * 2020-08-10 2022-04-12 西安大医集团股份有限公司 Image reconstruction method, device and computer storage medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0464180A (en) * 1990-07-04 1992-02-28 Toshiba Corp Digital image display device
JP2004188201A (en) * 2002-12-10 2004-07-08 Eastman Kodak Co Method to automatically construct two-dimensional statistical form model for lung area
JP5208484B2 (en) * 2007-11-14 2013-06-12 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー X-ray CT system
US8483466B2 (en) * 2008-05-22 2013-07-09 Hitachi Medical Corporation Magnetic resonance imaging apparatus and blood vessel image acquiring method

Similar Documents

Publication Publication Date Title
JP2013003647A5 (en)
EP2717566A3 (en) Content processing apparatus for processing high resolution content and method thereof
WO2012142505A3 (en) Pixel value compaction for graphics processing
JP2017502338A5 (en)
RU2014123656A (en) METHOD AND DEVICE OF SCALING MANAGEMENT AND DEVICE OF DIGITAL PHOTOGRAPHY
EP2551796A3 (en) Image processing device identifying attribute of region included in image
EP2838069A3 (en) Apparatus and method for analyzing image including event information
JP2013106951A5 (en)
EP2827324A3 (en) Method of driving display device
EP2525562A3 (en) Image processing apparatus, image processing method, program and imaging apparatus
EP2849157A3 (en) Image processing apparatus, image processing method, and computer-readable storage medium
EP2485194A3 (en) Image processing apparatus, method and program
MX358591B (en) Method and device for processing logo on video file.
EP2635031A3 (en) Systems and methods for image processing
EP2677732A3 (en) Method, apparatus and computer program product for capturing video content
EP2860700A3 (en) Image processing apparatus and method
WO2014011275A3 (en) System and method for post-detection artifact reduction and removal from images
GR20140100528A (en) A title based graphics processor and a method of performing graphics processing in a tile based graphics processor
WO2014133769A3 (en) Method and system for image processing
EP2571251A3 (en) Image processor, image processing method, and computer readable medium
MX341259B (en) Image processing method and apparatus.
EP2645697A3 (en) Image processing apparatus and method
WO2013105042A3 (en) Image processing apparatus
WO2012145436A3 (en) Alternate viewpoint rendering
JP2016529936A5 (en)