人臉識(shí)別程序以及機(jī)器視覺研究?jī)?nèi)容和發(fā)展方向4

1、Lab Windows實(shí)驗(yàn)報(bào)告姓名：張旭 學(xué)號(hào)：0905104116 專業(yè)：光電信息工程實(shí)驗(yàn)四：LabWindows用戶界面編程一、實(shí)驗(yàn)要求 1、熟悉儀器面板、控件的屬性含義及設(shè)置； 2、在編程時(shí)，能夠熟練使用儀器面板的庫函數(shù)；二、實(shí)驗(yàn)內(nèi)容編寫一個(gè)如下圖所示的函數(shù)發(fā)生器，也可以設(shè)計(jì)成其它應(yīng)用程序界面。3、 實(shí)驗(yàn)儀器計(jì)算機(jī)一臺(tái)，裝有LabWindows4、 實(shí)驗(yàn)步驟 步驟1：根據(jù)設(shè)計(jì)要求，設(shè)計(jì)如上圖所示的用戶界面，其具體控件屬性設(shè)置如下表所示?？丶愋虲onstant Name屬性設(shè)置面板PanelPANEL命令按鈕Command ButtonQUITBUTTONCallback Functio

2、nQuitCallbackLable_Quit曲線圖控件GraphGRAPH1Control ModeIndicatorData ModeRetainLable波形顯示下拉列表控件RingWAVEFORMCallback FunctionWaveFormChooseCBLabel波形選擇Label/Value PairsLabel無Value0正弦波1三角波2鋸齒波3方波4步驟2：生成代碼框架。選擇CodeGenerateAll Code, 生成代碼框架，接著添加自定義函數(shù)show_wave 進(jìn)行顯示。 /*下拉列表控件“波形選擇”對(duì)應(yīng)的回調(diào)函數(shù)*/int CVICALLBACK WaveFo

3、rmChooseCB (int panel, int control, int event,void *callbackData, int eventData1, int eventData2) switch (event)case EVENT_COMMIT: show_wave();break;return 0;然后，在函數(shù)show_wave內(nèi)添加如下代碼。void show_wave(void) int waveForm;/*波形選擇變量*/double ample=5.0;/*幅度*/double phase=0.0,waveDataPOINTS；/*相位和波形數(shù)據(jù)變量*/double

4、sampleRate=10000.0,freq=100.0;/*采樣率和頻率變量*/GetCtrlVal (panelHandle, PANEL_WAVEFORM, &waveForm);switch (waveForm) case 0: /*無波形，即清除所畫曲線*/ DeleteGraphPlot(panelHandle,PANEL_GRAPH1,-1,VAL_IMMEDIATE_DRAW);break;case 1:/*正弦波*/ SineWave (POINTS, ample, freq/sampleRate, &phase, waveData);break;case 2:/*三角波*

5、/ TriangleWave (POINTS, ample, freq/sampleRate, &phase, waveData);break;case 3:/*鋸齒波*/ SawtoothWave (POINTS, ample, freq/sampleRate, &phase, waveData);break;case 4:/*方波*/ SquareWave (POINTS, ample, freq/sampleRate, &phase, 50.0, waveData);break;if(waveform)/*先判斷是否選擇了波形*/ DeleteGraphPlot (panelHandle

6、, PANEL_GRAPH1, -1, VAL_IMMEDIATE_DRAW); PlotWaveform (panelHandle, PANEL_GRAPH1, waveData, POINTS, VAL_DOUBLE, 1.0, 0.0, 0.0, 1.0/sampleRate, VAL_THIN_LINE, VAL_EMPTY_SQUARE, VAL_SOLID, 1, VAL_RED);/*畫出波形*/ 代碼中的函數(shù)意義及調(diào)用方法如下1、函數(shù)DeleteGraphPlot 清除所畫曲線，調(diào)用路徑為：LibraryUer Interface LibraryControls/Graphs/

7、Strip Charts.Graphs and Stirp ChartsDelete Graph Plot其參數(shù)設(shè)置見圖1。圖1 DeleteGraphPlot函數(shù)面板2、函數(shù)SineWave，TriangleWave，SawtoothWave，SquareWave分別為正弦波，三角波，鋸齒波和方波生成函數(shù)。它們都在Library Advanced Analysis Library Signal Generation 目錄下獲得，其參數(shù)設(shè)置如圖2圖5所示。3、函數(shù)PlotWaveform，畫曲線圖函數(shù)，調(diào)用路徑為：LibraryUer Interface LibraryControls/Gra

8、phs/Strip Charts.Graphs and Stirp ChartsPlotWaveform，其參數(shù)設(shè)置見圖6。圖2 正弦波生成函數(shù)面板圖3 三角波生成函數(shù)面板圖4 鋸齒波生成函數(shù)面板圖5 方波生成函數(shù)面板圖6 PlotWaveform函數(shù)面板步驟3：運(yùn)行程序。選擇RunDebug ex1_dbg.exe。5、 關(guān)鍵代碼及注釋#include #include #include #include myhanshu.h#define POINTS 512static int panelHandle;int main (int argc, char *argv)if (InitCVIR

9、TE (0, argv, 0) = 0)return -1;/* out of memory */if (panelHandle = LoadPanel (0, myhanshu.uir, PANEL) 0)return -1;DisplayPanel (panelHandle);RunUserInterface ();DiscardPanel (panelHandle);return 0;void show_wave(void) int waveForm;/*波形選擇變量*/double ample=5.0;/*幅度*/double phase=0.0,waveDataPOINTS;/*相位

10、和波形數(shù)據(jù)變量*/double sampleRate=10000.0,freq=100.0;/*采樣率和頻率變量*/GetCtrlVal (panelHandle, PANEL_WAVEFORM, &waveForm);switch (waveForm) case 0: DeleteGraphPlot (panelHandle, PANEL_GRAPH1, -1, VAL_IMMEDIATE_DRAW); break; case 1: SineWave (POINTS, ample, freq/sampleRate, &phase, waveData); break;case 2:Triang

11、leWave (POINTS, ample, freq/sampleRate, &phase, waveData); break;case 3:SawtoothWave (POINTS, ample, freq/sampleRate, &phase, waveData); break;case 4:SquareWave (POINTS, ample, freq/sampleRate, &phase, 50.0, waveData);break;if(waveForm)/*先判斷是否選擇了波形*/ DeleteGraphPlot (panelHandle, PANEL_GRAPH1, -1, V

12、AL_IMMEDIATE_DRAW); PlotWaveform (panelHandle, PANEL_GRAPH1, waveData, POINTS, VAL_DOUBLE, 1.0, 0.0, 0.0, 1.0/sampleRate, VAL_THIN_LINE, VAL_EMPTY_SQUARE, VAL_SOLID, 1, VAL_RED);/*畫出波形*/ int CVICALLBACK QuitCallback (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:QuitUserInterface (0);break;return 0;/“波形選擇”對(duì)應(yīng)的回調(diào)函數(shù)