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)