1. A verification method for determining areas within an image corresponding to monetary banknotes, the method comprising: dividing the image into a plurality of verification sections; generating a banknote boundary map having border sections corresponding to a boundary of valid monetary banknotes within the image; generating a texture decision map from the image having texture sections, the texture sections each having texture values within a valid range according to a valid monetary banknote, wherein generating the texture decision map includes: dividing the image into a plurality of feature sections; generating a texture feature map having texture values for each feature section; including the border sections within the texture sections; selecting feature sections having texture values within a first texture value threshold range as potential texture sections; determining an average texture value for surrounding feature sections of each potential texture section; and further including potential texture sections having surrounding feature sections with the average texture value within a second texture value threshold range within the texture sections; determining a number of objects in the texture decision map by removing texture sections in the texture decision map that correspond to the border sections in the banknote boundary map; calculating a texture property value for each object according to a texture feature map having a texture feature value for each verification section; calculating a shape property value for each object; and further removing texture sections from the texture decision map corresponding to objects that do not have the texture property value within a first predetermined range and the shape property value within a second predetermined range.