Light color identifying method and apparatus of signal light, and roadside device

A light color identifying apparatus of a signal light, comprising:

• at least one processor;
• and
• a memory communicatively connected to the at least one processor;
• wherein the memory has stored therein instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:
• collect an image comprising the signal light through an image collecting apparatus;
• determine a background image according to N preceding frames of images of a current frame of image, wherein N is a positive integer greater than or equal to 1;
• perform foreground identification on the current frame of image according to the background image to obtain a moving foreground, wherein the moving foreground represents a change of the current frame of image relative to the background image;
• and
• determine, according to the moving foreground, a light color of a light that is turned on in the current frame of image.

A non-transitory computer readable storage medium having stored therein computer instructions for causing a computer to:

• collect an image comprising the signal light through an image collecting apparatus;
• determine a background image according to N preceding frames of images of a current frame of image, wherein N is a positive integer greater than or equal to 1;
• perform foreground identification on the current frame of image according to the background image to obtain a moving foreground, wherein the moving foreground represents a change of the current frame of image relative to the background image;
• and
• determine, according to the moving foreground, a light color of a light that is turned on in the current frame of image.