Data recognition model construction apparatus and method for constructing data recognition model thereof, and data recognition apparatus and method for recognizing data thereof

A data recognition model construction apparatus comprising:

• a video inputter configured to receive a video;
• an image composition unit configured to obtain at least one common object included in each of a plurality of images that form at least a portion of the video, and obtain a composition image by overlaying a plurality of common areas corresponding to the at least one common object with each other, each of the plurality of common areas being included in a corresponding image among the plurality of images and including the at least one common object, and each of the plurality of images including a common area and a background;
• a model learning unit configured to make a data recognition model learn using the obtained composition image;
• and
• a model storage configured to store the learnt data recognition model,
• wherein the image composition unit is further configured to, based on an attribute of the background, overlay only the plurality of common areas or overlay the plurality of common areas and a plurality of backgrounds corresponding to the plurality of common areas.