Object detection

A mobile device for detecting objects in an image, the mobile device comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the mobile device to:
• obtain an image to process;
• perform tracking to find any tracked objects in the image, wherein any tracked objects have been identified in a previous image;
• perform category object detecting of the image, resulting in a respective category label for each detected object;
• and
• send a request to a server to perform specific object detecting of at least one object detected in the category object detecting, wherein the specific object detecting is a more granular object detecting than the category object detecting.

A non-transitory computer readable storage medium storing a computer program for detecting objects in an image, the computer program comprising computer program code which, when executed on a mobile device causes the mobile device to:

• obtain an image to process;
• perform tracking to find any tracked objects in the image, wherein any tracked objects have been identified in a previous image;
• perform category object detecting of the image, resulting in a respective category label for each detected object;
• and
• send a request to a server to perform specific object detecting of at least one object detected in the category object detecting, wherein the specific object detecting is a more granular object detecting than the category object detecting.