Picture delivering system based on visual cryptography and related computer program product

A picture delivering system based on visual cryptography, comprising:

• a picture generating device, configured to operably output a flat picture corresponding to an encrypted picture and to operably provide a picture ID corresponding to the encrypted picture;
• and
• a picture presenting device, configured to operably utilize an optical imaging device to capture an image of the flat picture to generate a captured picture, to operably obtain the picture ID, and to operably transmit the picture ID to the picture generating device via internet;
• wherein the picture generating device conducts an entity identification procedure with the picture presenting device, and when the picture presenting device passed the entity identification procedure, the picture presenting device obtains a decryption information, processes the captured picture according to the decryption information to obtain a decrypted picture, and then utilizes a display device to display the decrypted picture;
• wherein the decryption information comprises at least one of a seed key, a mask picture, and a transposition table corresponding to the picture ID.

A computer program product, stored in a non-transitory computer readable medium, when executed by a processor module of a picture presenting device, enabling the picture presenting device to perform a picture viewing operation, wherein the picture presenting device comprises the processor module, a display device, a communication device, and an optical imaging device, the picture viewing operations comprising:

• utilizing the optical imaging device to capture an image of a flat picture to generate a captured picture;
• obtaining a picture ID corresponding to an encrypted picture;
• utilizing the communication device to transmit the picture ID to a viewing control server via internet;
• conducting an entity identification procedure with the viewing control server and obtaining a decryption information when passed the entity identification procedure, wherein the decryption information comprises at least one of a seed key, a mask picture, and a transposition table corresponding to the picture ID;
• utilizing the processor module to process the captured picture according to the decryption information to obtain a decrypted picture;
• and
• utilizing the display device to display the decrypted picture.