Image analysis apparatus and method for determining shape of particle included in image of object

An image analysis apparatus comprising:

• a processor;
• and
• a memory storing program instructions that cause the processor to:
• determine a shape of a particle included in a particle image that is extracted from an image of an object, so that an OK particle image which is a particle image of an OK particle that satisfies a predetermined standard for shape and a provisional NG particle image which is a particle image of a provisional NG particle that does not satisfy the predetermined standard, are obtained;
• prepare a generative model;
• generate a pseudo image (fake) using the generative model;
• and
• determine whether the provisional NG particle image and the pseudo image (fake) are similar, wherein in a case where the provisional NG particle image and the pseudo image (fake) are determined to be similar, the provisional NG particle is determined as including an OK particle, wherein
• in the preparing of the generative model, machine learning is performed by using a network having an early-stage network in which the image of the object is input in an input layer and a feature is output in an output layer, and a late-stage network in which the feature output from the early-stage network is input in an input layer and a pseudo image generated by superimposing a plurality of particle images including the OK particle image is output in an output layer.