3. The apparatus according to claim 2 , wherein the texture estimation unit estimates the texture images by a projection matrix calculated from a feature point in the three-dimensional information corresponding to the feature point of the input image.
3. The apparatus according to claim 2 , wherein the texture estimation unit estimates the texture images by a projection matrix calculated from a feature point in the three-dimensional information corresponding to the feature point of the input image. 4. The apparatus according to claim 3 , wherein: the feature extraction unit calculates, as the extracted feature quantity, a subspace by analyzing the pattern image; the dictionary holding unit holds a dictionary subspace as the dictionary feature quantity of the object; and the similarity degree calculation unit calculates the similarity degree between the calculated subspace and the dictionary subspace.