1. A processor implemented liveness test method, the liveness test method comprising: extracting an interest region of an object from a portion of the object in an input image; performing a liveness test on the object using a neural network model-based liveness test model for each of one or more images of the object respectively input to the liveness test model, including the liveness test model using image information of the interest region as provided first input image information to the liveness test model and determining liveness of the object based at least on extracted texture information from the image information of the interest region by the liveness test model; and indicating a result of the liveness test.