数据集 —— ground truth 数据集

1. matlab 自带含 ground truth 数据集

%% 加载停车标志数据到内存；
data = load(\'stopSignsAndCars.mat\', \'stopSignsAndCars\');
stopSignsAndCars = data.stopSignsAndCars;

% 将 stopSignsAndCars 下的图像名，拓展为绝对路径加图像名，以方便读取
imagePath = fullfile(toolboxdir(\'vision\'), \'visiondata\');
stopSignsAndCars.imageFilename = fullfile(imagePath, stopSignsAndCars.imageFilename);

summary(stopSignsAndCars)   
            % 查看该数据集的主要描述信息，主要标注了 stop sign，car rear：车尾，car front：车头

stopSignsAndCarRears = stopSignsAndCars(:, {\'imageFilename\', \'stopSign\', \'carRear\'});

% 使用已给的标注信息，对其中一副图像进行标注
I = imread(stopSignsAndCarRears.imageFilename{1});
I = insertObjectAnnotation(I, \'rectangle\', stopSignsAndCarRears.stopSign{1}, \'stop sign\', \'linewidth\', 4, \'color\', \'r\');
I = insertObjectAnnotation(I, \'rectangle\', stopSignsAndCarRears.carRear{1}, \'car rear\', \'linewidth\', 4, \'color\', \'g\');

imshow(I)