爲什麼當它分配給sbm-> state.SADWindowSize，在我的代碼

Question

SADWinowSize_slider的trackbar的值變爲0我正在使用opencv通過GUI測試stereoBM調整參數。

以下是我的代碼。

Mat out1, out2; 

Size imageSize = out1.size(); 

StereoBM sbm; 

/// Initialize values 
int preFilterType_slider = 0, preFilterCap_slider = 0, preFilterSize_slider = 0, 

minDisparity_slider = 0, uniqnessRatio_slider = 0, textureThreshold_slider = 0, 

speckleRange_slider = 0, sADWindowSize_slider = 5, spackleWindowSize_slider = 0, 

numDisparities_slider = 0, numDisparities2_slider = 0; 



int preFilterType_max = 1, preFilterCap_max = 61, preFilterSize_max = 100, 

minDisparity_max = 200, uniqnessRatio_max = 2500, textureThreshold_max = 10000, 

speckleRange_max = 500, sADWindowSize_max = 255, spackleWindowSize_max = 200, 

numDisparities_max = 500, numDisparities2_max = 0; 


Mat dispt, disp8, g1, g2; 

void on_trackbar_bmTunning(int , void*) 
{ 

    if (preFilterSize_slider % 2 == 0) preFilterSize_slider++; //odd 
    if (preFilterSize_slider < 5) preFilterSize_slider = 5;  //started from 5 
    if (preFilterSize_slider > 255) preFilterSize_slider = 255; // to 255 

    if (preFilterCap_slider < 1) preFilterCap_slider = 1; 
    if (preFilterCap_slider > 63) preFilterCap_slider = 63; 

    if (sADWindowSize_slider % 2 == 0) sADWindowSize_slider++; 
    if (sADWindowSize_slider <= 5) sADWindowSize_slider = 5; 
    if (sADWindowSize_slider > 255)sADWindowSize_slider = 255; 
    if (sADWindowSize_slider >= MIN(imageSize.width, imageSize.height)) 
     sADWindowSize_slider = MIN(imageSize.width, imageSize.height); 

    if (minDisparity_slider < 0) minDisparity_slider = 0; 

    if (numDisparities_slider <1) numDisparities_slider = 1; 

    if (textureThreshold_slider < 0) textureThreshold_slider = 1; 

    if (uniqnessRatio_slider < 0) uniqnessRatio_slider = 1; 


    //disp8 = g1.clone(); 

    sbm.state->speckleWindowSize = spackleWindowSize_slider; 
    sbm.state->speckleRange = speckleRange_slider; 
    sbm.state->preFilterSize = preFilterSize_slider; // 41 
    sbm.state->preFilterCap = preFilterCap_slider; //31 
    sbm.state->SADWindowSize = sADWindowSize_slider; //41 
    sbm.state->minDisparity = minDisparity_slider *-16;//-64 
    sbm.state->numberOfDisparities = numDisparities_slider * 16; //128 
    sbm.state->textureThreshold = textureThreshold_slider; //10 
    sbm.state->uniquenessRatio = uniqnessRatio_slider; //15 

    sbm(g1, g2, dispt); 

    normalize(dispt, disp8, 0, 255, CV_MINMAX, CV_8U); 

    imshow("Tune BM Window ", disp8); 
} 

int test2_bmTunning() { 

    out1 = imread("aloeL.jpg"); 

    out2 = imread("aloeR.jpg"); 

    cvtColor(out1, g1, CV_BGR2GRAY); 

    cvtColor(out2, g2, CV_BGR2GRAY); 

    namedWindow("Tune BM Window", CV_WINDOW_NORMAL); 

    createTrackbar("Number of Disparities", "Tune BM Window", &preFilterType_slider, preFilterType_max, 0); 

    createTrackbar("Pre Filter Cap", "Tune BM Window", &preFilterCap_slider, preFilterCap_max, on_trackbar_bmTunning); 

    createTrackbar("Pre Filter Size", "Tune BM Window", &preFilterSize_slider, preFilterSize_max, on_trackbar_bmTunning); 

    createTrackbar("Minimum Disparity", "Tune BM Window", &minDisparity_slider, minDisparity_max, on_trackbar_bmTunning); 

    createTrackbar("Uniqueness Ratio", "Tune BM Window", &uniqnessRatio_slider, uniqnessRatio_max, on_trackbar_bmTunning); 

    createTrackbar("Texture Threshold", "Tune BM Window", &textureThreshold_slider, textureThreshold_max, on_trackbar_bmTunning); 

    createTrackbar("Speckle Range", "Tune BM Window", &speckleRange_slider, speckleRange_max, on_trackbar_bmTunning); 

    createTrackbar("Block Size", "Tune BM Window", &sADWindowSize_slider, sADWindowSize_max, on_trackbar_bmTunning); 

    createTrackbar("Speckle Window Size", "Tune BM Window", &spackleWindowSize_slider, spackleWindowSize_max, on_trackbar_bmTunning); 

    createTrackbar("Number of Disparity", "Tune BM Window", &numDisparities_slider, numDisparities_max, on_trackbar_bmTunning); 

    /// Show some stuff 
    //on_trackbar_bmTunning(sADWindowSize_slider, 0); 

    waitKey(0); 

    return 0; 
} 

問題：

當從跟蹤條滑塊SADWindowSlize值的值被分配給sbm.state-時發生該問題> SADWindowSize = sADWindowSize_slider; // 41

在這行代碼，sADWindowSize_slider的值變爲0，所以它拋出運行時間錯誤SAD窗口大小應的奇數和在我不能至5 255

之間

瞭解SADWindowSize_slider的值如何變爲0 ..

請指導我找出原因並幫助我解決問題。

謝謝

Answer 1

我們在我們的代碼中發現問題。

SADWindowSize應的奇數和在5 255 之間〜因此，不需要該條件，也沒有意義。

if (sADWindowSize_slider >= MIN(imageSize.width, imageSize.height)) 
     sADWindowSize_slider = MIN(imageSize.width, imageSize.height); 

只要刪除代碼上述行，運行和爲貴iamge調諧參數，並享受結果。

玩得開心！