Transparency overlay method for virtual set top box, virtual set top box, and storage medium

A virtual set top box, the virtual set top box comprising a processor, a memory and a communication bus;

• the communication bus is configured to implement connection communication between the processor and the memory;
• and
• the processor is configured to execute one or more computer programs stored in the memory, so as to implement following operations:
• acquiring transparency layout features of a picture presented by an application scenario of the virtual set top box;
• determining, according to the transparency layout features, whether compression processing of transparency data is allowed for each block on the picture;
• and
• performing compression processing of transparency data on each allowed block, and performing transparency overlay according to transparency data sampling points less than full number of transparency data sampling points in each allowed block;
• wherein acquiring transparency layout features of a picture presented by an application scenario of the virtual set top box comprises:
• performing first block division processing on the picture by using a first intelligent block division algorithm;
• in a case where transparency values in at least one first block after block division are consistent, locking the at least one first block;
• performing second block division processing on an entirety of unlocked blocks by using a second intelligent block division algorithm, and locking at least one second block with consistent transparency values;
• and
• acquiring the transparency layout features by using at least two intelligent block division algorithms.

A non-transitory computer-readable storage medium, wherein the storage medium has one or more computer programs stored therein, and the one or more computer programs can be executed by one or more processors, so as to implement following operations:

• acquiring transparency layout features of a picture presented by an application scenario of the virtual set top box;
• determining, according to the transparency layout features, whether compression processing of transparency data is allowed for each block on the picture;
• and
• performing compression processing of transparency data on each allowed block, and performing transparency overlay according to transparency data sampling points less than full number of transparency data sampling points in each allowed block;
• wherein acquiring transparency layout features of a picture presented by an application scenario of the virtual set top box comprises:
• performing first block division processing on the picture by using a first intelligent block division algorithm;
• in a case where transparency values in at least one first block after block division are consistent, locking the at least one first block;
• performing second block division processing on an entirety of unlocked blocks by using a second intelligent block division algorithm, and locking at least one second block with consistent transparency values;
• and
• acquiring the transparency layout features by using at least two intelligent block division algorithms.