1. An Asian character document shuffling method for randomly relocating text character images of a scanned-in Asian character document to produce a shuffled image, wherein the meaning of text in the shuffled image is not understandable though individual characters forming the text in the shuffled image are recognizable, the method comprising steps of: dividing an Asian character document image into a text image portion and a non-text image portion; structuring the text image portion into a multiple resolution-level pyramid; extracting shuffleable character images by analyzing the multiple-resolution-level pyramid; and shuffling some or all of the extracted shuffleable character images to create a shuffled image.