gusucode.com > visionhdl工具箱matlab源码程序 > visionhdl/visionhdl/+visionhdl/en/ImageStatistics.m
classdef ImageStatistics< matlab.System & matlab.system.mixin.Propagates & matlab.system.mixin.CustomIcon & matlab.system.mixin.Nondirect %ImageStatistics Computes the mean, variance and standard deviation of the input image. % stat = visionhdl.ImageStatistics returns a System object, stat, that % computes the statistics of a two-dimensional image. % % Step method syntax: % [mean,variance,stdDev,validOut] = step(stat,pixIn,ctrlIn) gives the % first order statistics of the input data, where blanking intervals % are indicated by the input control signals. ctrlIn is a structure % consisting of five control signals. See also <a href="matlab:doc visionhdl.FrameToPixels">visionhdl.FrameToPixels</a> % or <a href="matlab:doc pixelcontrolstruct">pixelcontrolstruct</a>. % % System objects may be called directly like a function instead of using % the step method. For example, y = step(obj, x) and y = obj(x) are % equivalent. % % ImageStatistics methods: % % step - See above description for use of this method % release - Allow property value and input characteristics changes % clone - Create 2-D Statistics object with same property values % isLocked - Locked status (logical) % % ImageStatistics properties: - % % mean - Enable the computation and output of the mean. % variance - Enable the computation and output of the variance. % stdDev - Enable the computation and output of the standard deviation. % % % EXAMPLE: % % Calculate image statistic % frm2pix = visionhdl.FrameToPixels(... % 'VideoFormat','custom',... % 'ActivePixelsPerLine',32,... % 'ActiveVideoLines',18,... % 'TotalPixelsPerLine',42,... % 'TotalVideoLines',28,... % 'StartingActiveLine',6,... % 'FrontPorch',5); % [actPixPerLine,actLine,numPixPerFrm] = getparamfromfrm2pix(frm2pix); % % stat = visionhdl.ImageStatistics; % % frmFull = imread('pout.tif'); % frmIn = frmFull(79:78+actLine,93:92+actPixPerLine); % % meanOut = zeros(numPixPerFrm,1,'uint8'); % varOut = zeros(numPixPerFrm,1,'uint16'); % stdDevOut = zeros(numPixPerFrm,1,'uint8'); % % [pixInVec,ctrlInVec] = step(frm2pix,frmIn); % for p = 1:numPixPerFrm % [meanOut(p),varOut(p),stdDevOut(p),~] = step(stat,pixInVec(p),ctrlInVec(p)); % end % % See also vision.Mean, vision.Variance, vision.StandardDeviation, % mean, var, std2. % Copyright 2014-2016 The MathWorks, Inc. methods function out=ImageStatistics %ImageStatistics Computes the mean, variance and standard deviation of the input image. % stat = visionhdl.ImageStatistics returns a System object, stat, that % computes the statistics of a two-dimensional image. % % Step method syntax: % [mean,variance,stdDev,validOut] = step(stat,pixIn,ctrlIn) gives the % first order statistics of the input data, where blanking intervals % are indicated by the input control signals. ctrlIn is a structure % consisting of five control signals. See also <a href="matlab:doc visionhdl.FrameToPixels">visionhdl.FrameToPixels</a> % or <a href="matlab:doc pixelcontrolstruct">pixelcontrolstruct</a>. % % System objects may be called directly like a function instead of using % the step method. For example, y = step(obj, x) and y = obj(x) are % equivalent. % % ImageStatistics methods: % % step - See above description for use of this method % release - Allow property value and input characteristics changes % clone - Create 2-D Statistics object with same property values % isLocked - Locked status (logical) % % ImageStatistics properties: - % % mean - Enable the computation and output of the mean. % variance - Enable the computation and output of the variance. % stdDev - Enable the computation and output of the standard deviation. % % % EXAMPLE: % % Calculate image statistic % frm2pix = visionhdl.FrameToPixels(... % 'VideoFormat','custom',... % 'ActivePixelsPerLine',32,... % 'ActiveVideoLines',18,... % 'TotalPixelsPerLine',42,... % 'TotalVideoLines',28,... % 'StartingActiveLine',6,... % 'FrontPorch',5); % [actPixPerLine,actLine,numPixPerFrm] = getparamfromfrm2pix(frm2pix); % % stat = visionhdl.ImageStatistics; % % frmFull = imread('pout.tif'); % frmIn = frmFull(79:78+actLine,93:92+actPixPerLine); % % meanOut = zeros(numPixPerFrm,1,'uint8'); % varOut = zeros(numPixPerFrm,1,'uint16'); % stdDevOut = zeros(numPixPerFrm,1,'uint8'); % % [pixInVec,ctrlInVec] = step(frm2pix,frmIn); % for p = 1:numPixPerFrm % [meanOut(p),varOut(p),stdDevOut(p),~] = step(stat,pixInVec(p),ctrlInVec(p)); % end % % See also vision.Mean, vision.Variance, vision.StandardDeviation, % mean, var, std2. end function getExecutionSemanticsImpl(in) %#ok<MANU> % works in both classic and synchronous subsystems end function getHeaderImpl(in) %#ok<MANU> %getHeaderImpl Return header for object display end function getIconImpl(in) %#ok<MANU> end function getInputNamesImpl(in) %#ok<MANU> end function getNumInputsImpl(in) %#ok<MANU> end function getNumOutputsImpl(in) %#ok<MANU> end function getOutputDataTypeImpl(in) %#ok<MANU> end function getOutputNamesImpl(in) %#ok<MANU> end function getOutputSizeImpl(in) %#ok<MANU> end function getPropertyGroupsImpl(in) %#ok<MANU> %getPropertyGroupsImpl Return property groups for object display end function isOutputComplexImpl(in) %#ok<MANU> end function isOutputFixedSizeImpl(in) %#ok<MANU> end function loadObjectImpl(in) %#ok<MANU> end function outputImpl(in) %#ok<MANU> % outputImpl: send output, do not update states end function resetImpl(in) %#ok<MANU> end function saveObjectImpl(in) %#ok<MANU> % Save the public properties end function setupImpl(in) %#ok<MANU> end function showSimulateUsingImpl(in) %#ok<MANU> end function updateImpl(in) %#ok<MANU> % updateImpl: update states, no output end function validateInputsImpl(in) %#ok<MANU> %coder.extrinsic('validatecontrolsignals'); end end methods (Abstract) end properties %mean Enable mean output % The logical value returned by the property indicates whether to % output the mean or otherwise. mean; %stdDev Enable std. deviation output % The logical value returned by the property indicates whether to % output the variance or otherwise. stdDev; %variance Enable variance output % The logical value returned by the property indicates whether to % output the variance or otherwise. variance; end end