C++程序在OpenCV应用程序中不区分大小写字母



我正在编辑一个由一些同事编写的相对较大的基于OpenCV的程序。我面临的问题是程序无法区分大小写键击(即键击"d"one_answers"d"都被视为0x65)我的同事告诉我,他通过直接从源代码编译机器上的OpenCV库,解决了机器上的问题。

我是一个新手,但也很好奇为什么会发生这样的事情,以及它与OpenCV安装有什么关系!

我的机器上仍然有问题,但我没有尝试重新安装openCV。

编辑:操作系统Linux Ubuntu 12.1064位字母是键盘上的按键,它们用于switch语句。

    static int process_key(struct cam_segment* cs, int key){
    int res = 0;
    double pdist;
    struct stat sb;
    char fn[4096];
    static int out_id = 0;
    fprintf( stderr, "%dn", key&0xff );
    switch (key & 0xff) {
    case 'm':
        show_merged = !show_merged;
        res = 1;
        break;
    case '1':
    case '2':
    case '3':
    case '4':
    case '5':
    case '6':
        cam_id = (key & 0xff) - '1';
        res = 1;
        break;
    case 'D':
        ocv_mgrid_set_distortion( cs->mg, 0 );
        res = 1;
        break;
    case 'd':
        ocv_mgrid_set_distortion( cs->mg, 1 );
        res = 1;
        break;
    case 'n':
        res = 1;
        break;
    case 'C':
        init_calibration(cs);
        calibrate_camera_distortion(cs->mg);
        output_calibration_results(cs);
        cs->calib_mode = 1;
        res = 1;
        break;
    case 'c':
        init_calibration(cs);
        fprintf(stderr,"searching.....");
        calibrate_camera_rotation(cs->mg);
        output_calibration_results(cs);
        fprintf(stderr,"e1 %fn",water_error(cs->mg));
        cs->calib_mode = 1;
        res = 1;
        break;
    case 'M':
        init_calibration(cs);
        fprintf(stderr,"searching pricipal point.....");
        calibrate_camera_center(cs->mg);
        output_calibration_results(cs);
        cs->calib_mode = 1;
        res = 1;
        break;
    case 'a':
        init_calibration(cs);
        int misscnt;
        double e,en;
        en = e = HUGE;
        misscnt = 0;
        for(int i=0;i<20;i++) {
            e = water_error(cs->mg);
            fprintf(stderr,"e1 %f %d n",e,misscnt);
            calibrate_camera_rotation(cs->mg);
            output_calibration_results(cs);
            en = water_error(cs->mg);
            fprintf(stderr,"en1 %fn",en);
            if (en >= e)
                misscnt++;
            else
                misscnt = 0;
            if (misscnt > 3)
                break;
            e = water_error(cs->mg);
            fprintf(stderr,"e %f %dn",e,misscnt);
            calibrate_coupled_focal_length(cs->mg);
            output_calibration_results(cs);
            en = water_error(cs->mg);
            fprintf(stderr,"en %fn",en);
            if (en >= e)
                misscnt++;
            else
                misscnt = 0;
            if (misscnt > 3)
                break;
            e = water_error(cs->mg);
            if (e > 100) 
                continue;
            fprintf(stderr,"e %f %dn",e,misscnt);
            calibrate_camera_distortion(cs->mg);
            output_calibration_results(cs);
            en = water_error(cs->mg);
            fprintf(stderr,"en %fn",en);
            if (en >= e)
                misscnt++;
            else
                misscnt = 0;
            if (misscnt > 3)
                break;
        }
        cs->calib_mode = 1;
        res = 1;
        break;
    case 'p':
        init_calibration(cs);
        calibrate_coupled_focal_length(cs->mg);
        output_calibration_results(cs);
        cs->calib_mode = 1;
        res = 1;
        break;
    case 'F':
        init_calibration(cs);
        calibrate_focal_lengths(cs->mg);
        output_calibration_results(cs);
        cs->calib_mode = 1;
        res = 1;
        break;
    case 't':
        init_calibration(cs);
        calibrate_target(cs->mg);
        output_calibration_results(cs);
        cs->calib_mode = 1;
        res = 1;
        break;
    case 'e':
        sprintf(fn, "%s_%03d.png",cs->inp_prefix, cs->inp_id);
        if (!(input = cvLoadImage(fn, CV_LOAD_IMAGE_COLOR))) {
            fprintf(stderr,"error calc: loading input failedn");
        } else if (!(ocv_mgrid_set_input(cs->mg, input))) {
            fprintf(stderr,"error calc error 1n");
        }
        pdist = water_error(cs->mg);
        fprintf(stderr,"watererror: %fn",pdist);
        break;
    case 'N':
        res = 1;
        cs->inp_id++;
        cerr << "inp_id=" << cs->inp_id << "n";
        break;
    case 'P':
        res = 1;
        cs->inp_id--;
        cerr << "inp_id=" << cs->inp_id << "n";
        break;
    case 'z':
        cs->color_mode = OCV_MGRID_CMODE_THETA;
        res = 1;
        break;
    case 'Z':
        cs->color_mode = OCV_MGRID_CMODE_THETA_CHECK;
        res = 1;
        break;
    case 'l':
        cs->draw_legend = !(cs->draw_legend);
        res = 1;
        break;
    case 'x':
        cs->color_mode = OCV_MGRID_CMODE_X;
        res = 1;
        break;
    case 'y':
        cs->color_mode = OCV_MGRID_CMODE_Y;
        res = 1;
        break;
    case 'X':
        cs->color_mode = OCV_MGRID_CMODE_X_CHECK;
        res = 1;
        break;
    case 'Y':
        cs->color_mode = OCV_MGRID_CMODE_Y_CHECK;
        res = 1;
        break;
    case 'o':
        cs->color_mode = OCV_MGRID_CMODE_NONE;
        res = 1;
        break;
    case 's':
        sprintf(fn, "input_%03d.png",out_id);
        while(stat(fn, &sb) != -1) {
            out_id++;
            sprintf(fn, "input_%03d.png",out_id);
        }
        fprintf(stderr,"saving %s n",fn);
        cvSaveImage(fn,OCV_MGRID_GET_INPUT(cs->mg));
        break;
    case 'r':
        if (projection)
            cvResetImageROI(projection);
        if (merged_projection)
            cvResetImageROI(merged_projection);
        if (merged_grid)
            cvResetImageROI(merged_grid);
        if (output)
            cvResetImageROI(output);
        break;
    case 'R':
        reset_defaults();
        reset_trackbars();
        break;
    case 'f':
        ocv_mgrid_get_best_projection_distance(cs->mg, &pdist);
        fprintf(stderr,"best match %fn",pdist);
        tb_pdist = (int) pdist;
        cvSetTrackbarPos("proj_distance", "tbars", tb_pdist);
        res = 1;
        break;
    case 'w':
        if (use_camera)
            if (!(ocv_ueye_whitebalance(cs->ueye)))
                return 1;
        break;
    case 'W':
        save_params(cs);
        break;
    default:
        break;
    }
    return res;
}

直到现在我都不知道为什么!但我已经删除了旧的OpenCV库,并编译了最新版本。现在它确实区分了大写字母和小写字母。

新版本有一些细微的差异,这些差异不一定是好的,例如轨迹栏的值不能再通过点击来编辑了。此外(@kebs)关键笔划现在必须用0xff屏蔽!

我不知道也许我一直都有一个奇怪的OpenCV版本!

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