Method for automatically generating middle frame during two-dimension cartoon making process

The invention relates to a method for automatically generating a middle frame in the process of manufacturing two-dimensional cartoon which is used to solve the problem that the prior two-dimensional cartoon manufacturing software can not automatically generate the middle frame under the condition that a character image or a scene structure is relatively complex in camera lens. After the drawn line is closed to form a closed region, the matching relation of each region in each image layer is calculated; the obtained vector representation and selection character point in the matching region issubjected to character point matching; and finally, a Beizer curve is subjected to interpolation in a parameter field so as to reach the aim of automatically generating the middle frame between two key frames. Thus a cartoon manufacturer is released from a burdensome link of manufacturing the middle frame so as to inputs more energy to more creative creation.