Abstract: An image object classification method and system are disclosed. The method is executed by a processor coupled to a memory. The method includes: providing an image file including at least one image object, performing a process of extracting multiple binary-classified characteristics on the image object to obtain a plurality of first results independent of each other in categories, combining the plurality of first results in a manner of dimensionality reduction based on concatenation, performing a process of characteristics abstraction on the combined first results to obtain a second result, and performing a process of characteristics integration on the plurality of first results and the second result in a manner of dot product of matrices to obtain a classification result.

Abstract: An optical device includes: a lock having a locking unit and an operation unit having at least a sensor; and a key configured to correspond to the lock. The key includes an unlocking unit having at least a light-guiding element for transmitting light between the operation unit and the unlocking unit. The operation unit is activated to unlock the locking unit after the sensor detects and recognizes the transmitted light. After encoding, the optical device of the present invention cannot be reproduced and the encoded light beam will not be intercepted and decoded easily so as to satisfy our security demands. Further, the structure of the optical device of the present invention does not decay easily. Therefore, the present invention has an excellent anti-theft effect and a reduced production cost.

Abstract: A light guide unit provided in this disclosure is used for performing a reversible optical conversion process on a light source. In an embodiment, the light guide unit is used for converting a planar light source into at least a linear light source, and then further to be converted into one point light source, while allowing beams emitted from the point light source to be guided and shot to a specific position by the use of a light-guiding element. Moreover, in another embodiment, the light guide unit is used for converting at least one point light source into at least a linear light source, and then further to be converted into a planar light source for emitting light. The light guide unit can be adapted for various applications, such as optical devices for illumination, entertainment, decoration or ornaments.