1. An information processing apparatus which is connected to a projection device projecting an annotation image input from an external terminal onto a projection area, and an image capture device capturing the projection area, comprising: a recognizing portion that recognizes an object from a plurality of images captured by the image capture device; an outline deciding portion that decides an outline of the object recognized by the recognizing portion; a calculating portion that calculates average luminances of the inside and the outside of the outline of the object decided by the outline deciding portion; a determining portion that determines that a difference between the average luminance of the inside of the outline calculated by the calculating portion and the average luminance of the outside of the outline calculated by the calculating portion is equal to and more than a predetermined value; a projection image adjusting portion that generates an adjustment image which makes gradation increase so that a luminance of any one of the inside and the outside of the outline of the object increases when the determining portion determines that the difference is equal to and more than the predetermined value, the any one of the inside and the outside of the outline of the object having a lower average luminance than another one; a projection image inputting portion that inputs the adjustment image adjusted by the projection image adjusting portion to the projection device, and causes the projection device to project the adjustment image onto the object; and a capture controlling portion that causes the image capture device to capture the object in a state where the adjustment image is projected onto the object by the projection device.