1. An image processing apparatus comprising: a memory configured to store a program; a processor configured to execute the program stored in the memory; wherein the processor acquires a spatial frequency feature including a feature of fiber of an original in a read image obtained by a reading device reading the original, wherein the processor determines whether a high frequency component which corresponds to a frequency equal to or higher than a predetermined frequency and is included in the acquired spatial frequency feature, has directivity, and wherein the processor specifies a type of the original based on a result of the determination.