www.gusucode.com > visionhdl工具箱matlab源码程序 > visionhdl/visionhdl/+visionhdl/en/LookupTable.m
classdef LookupTable< matlab.System & matlab.system.mixin.Propagates & matlab.system.mixin.CustomIcon & matlab.system.mixin.Nondirect %LookupTable Specifies a one-to-one correspondance between the input pixel and ouput pixel according to table contents. % lut = visionhdl.LookupTable returns a System object, lut, that specifies % a one-to-one correspondance between the input pixel and ouput pixel % according to the lookup table contents. % % lut = visionhdl.LookupTable(TABLEDATA) returns a System object, lut, % with the table contents set to TABLEDATA. % % Step method syntax: % [pixOut,ctrlOut] = step(lut,pixIn,ctrlIn) % gives the intensity value based on the input pixel value and the table % contents. ctrlIn and ctrlOut are structures 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. % % LookupTable methods: % % step - See above description for use of this method % release - Allow property value and input characteristics changes % clone - Create median filter object with same property values % isLocked - Locked status (logical) % % LookupTable properties: % % Table - stores the table contents % % % EXAMPLE: % % Use lookup table as an inverter. % frm2pix = visionhdl.FrameToPixels(... % 'VideoFormat','custom',... % 'ActivePixelsPerLine',32,... % 'ActiveVideoLines',18,... % 'TotalPixelsPerLine',42,... % 'TotalVideoLines',28,... % 'StartingActiveLine',6,... % 'FrontPorch',5); % [actPixPerLine,actLine,numPixPerFrm] = getparamfromfrm2pix(frm2pix); % % pix2frm = visionhdl.PixelsToFrame(... % 'VideoFormat','custom',... % 'ActivePixelsPerLine',actPixPerLine,... % 'ActiveVideoLines',actLine); % % inverter = visionhdl.LookupTable(... % 'Table',uint8(255:-1:0)); % % frmFull = imread('rice.png'); % frmIn = frmFull(74:73+actLine,104:103+actPixPerLine); % imshow(frmIn); % % pixOutVec = zeros(numPixPerFrm,1,'uint8'); % ctrlOutVec = repmat(pixelcontrolstruct,numPixPerFrm,1); % % [pixInVec,ctrlInVec] = step(frm2pix,frmIn); % for p = 1:numPixPerFrm % [pixOutVec(p),ctrlOutVec(p)] = step(inverter,pixInVec(p),ctrlInVec(p)); % end % [frmOut,frmValid] = step(pix2frm,pixOutVec,ctrlOutVec); % % if frmValid % figure; % imshow(frmOut); % end % Copyright 2014-2016 The MathWorks, Inc. methods function out=LookupTable %LookupTable Specifies a one-to-one correspondance between the input pixel and ouput pixel according to table contents. % lut = visionhdl.LookupTable returns a System object, lut, that specifies % a one-to-one correspondance between the input pixel and ouput pixel % according to the lookup table contents. % % lut = visionhdl.LookupTable(TABLEDATA) returns a System object, lut, % with the table contents set to TABLEDATA. % % Step method syntax: % [pixOut,ctrlOut] = step(lut,pixIn,ctrlIn) % gives the intensity value based on the input pixel value and the table % contents. ctrlIn and ctrlOut are structures 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. % % LookupTable methods: % % step - See above description for use of this method % release - Allow property value and input characteristics changes % clone - Create median filter object with same property values % isLocked - Locked status (logical) % % LookupTable properties: % % Table - stores the table contents % % % EXAMPLE: % % Use lookup table as an inverter. % frm2pix = visionhdl.FrameToPixels(... % 'VideoFormat','custom',... % 'ActivePixelsPerLine',32,... % 'ActiveVideoLines',18,... % 'TotalPixelsPerLine',42,... % 'TotalVideoLines',28,... % 'StartingActiveLine',6,... % 'FrontPorch',5); % [actPixPerLine,actLine,numPixPerFrm] = getparamfromfrm2pix(frm2pix); % % pix2frm = visionhdl.PixelsToFrame(... % 'VideoFormat','custom',... % 'ActivePixelsPerLine',actPixPerLine,... % 'ActiveVideoLines',actLine); % % inverter = visionhdl.LookupTable(... % 'Table',uint8(255:-1:0)); % % frmFull = imread('rice.png'); % frmIn = frmFull(74:73+actLine,104:103+actPixPerLine); % imshow(frmIn); % % pixOutVec = zeros(numPixPerFrm,1,'uint8'); % ctrlOutVec = repmat(pixelcontrolstruct,numPixPerFrm,1); % % [pixInVec,ctrlInVec] = step(frm2pix,frmIn); % for p = 1:numPixPerFrm % [pixOutVec(p),ctrlOutVec(p)] = step(inverter,pixInVec(p),ctrlInVec(p)); % end % [frmOut,frmValid] = step(pix2frm,pixOutVec,ctrlOutVec); % % if frmValid % figure; % imshow(frmOut); % end 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 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 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 end function validateInputsImpl(in) %#ok<MANU> %coder.extrinsic('validatecontrolsignals'); end end methods (Abstract) end properties %Table Table data % The input pixel will be converted to an address indexing the table, % and the output is the content of the specified table cell. The data % type of the output follows that of the table data. Table; end end