Method of decoding optical information

A method for decoding optical information present in an acquired image, and comprising:

• identifying a set of functional parameters that are settable for processing said image and a plurality of instances of said set of functional parameters, and in which each of said instances corresponds to a different processing mode for said image;
• selecting a processing mode for decoding said optical information from the processing modes of a working set of processing modes;
• applying said selected processing mode;
• and
• associating with each processing mode a respective probability of success;
• wherein said selecting a processing mode comprises:
• choosing the processing mode with a highest probability of success value;
• updating after said applying said selected processing mode, both if said decoding was successful and if said decoding was not successful, a probability of success of each processing mode of said working set, such as to provide adaptive decoding of said optical information,
• the method further comprising:
• decreasing the value of probability of success of said selected processing mode and increasing the probability of success of each non-selected processing mode of said working set, if said decoding said acquired image was not successful,
• if all the processing modes for said working set have been unsuccessful and said selected processing mode is a last of said decoding attempts by means of said working set, modifying said working set by analysing said failure of said decoding of said selected processing mode to identify a cause of failure of said decoding, and
• modifying said working set if a cause of failure of said decoding is identified,
• wherein a library set of processing modes for decoding said code corresponds to said plurality of instances, said library set being formed of a preset number of different processing modes, said preset number being greater than or the same as the number of processing modes of which said working set is formed,
• wherein said modifying said working set comprises choosing, in said library set, processing modes related with a solution of said cause of failure and updating said working set with said processing modes related with said cause, and
• wherein said method further comprises associating a corresponding probability of success value with each processing mode of said modified working set.

A method for decoding optical information present in an acquired image, and comprising:

• identifying a set of functional parameters that are settable for processing said image and a plurality of instances of said set of functional parameters, and in which each of said instances corresponds to a different processing mode for said image;
• selecting a processing mode for decoding said optical information from the processing modes of a working set of processing modes;
• applying said selected processing mode;
• and
• associating with each processing mode a respective probability of success;
• wherein said selecting a processing mode comprises:
• choosing the processing mode with a highest probability of success value;
• updating after said applying said selected processing mode, both if said decoding was successful and if said decoding was not successful, a probability of success of each processing mode of said working set, such as to provide adaptive decoding of said optical information,
• the method further comprising:
• decreasing the value of probability of success of said selected processing mode and increasing the probability of success of each non-selected processing mode of said working set, if said decoding said acquired image was not successful,
• if all the processing modes for said working set have been unsuccessful and said selected processing mode is a last of said decoding attempts by means of said working set, modifying said working set by analysing said failure of said decoding of said selected processing mode to identify a cause of failure of said decoding, and
• modifying said working set if a cause of failure of said decoding is identified,
• wherein a library set of processing modes for decoding said code corresponds to said plurality of instances, said library set being formed of a preset number of different processing modes, said preset number being greater than or the same as the number of processing modes of which said working set is formed,
• wherein said modifying said working set comprises choosing, in said library set, processing modes related with a solution of said cause of failure and further as a function of said selected determined processing mode and updating said working set with said processing modes related with said cause, and
• wherein said method further comprises associating a corresponding value of probability of success with each processing mode of said modified working set.