Navigation system and navigation method

1. A navigation system comprising:

an electronic device, comprising an image capturing circuit configured to capture an environmental image, and a communication circuit configured to transmit the environmental image and a target information; and

a cloud server, configured to receive the environment image from the electronic device and store a plurality of default patterns, and each of the default patterns corresponding to a default coordinate, wherein the cloud server analyzes a pattern image of the environmental image according to the default patterns to calculate a coordinate of the electronic device, so as to execute navigation according to the coordinate of the electronic device and the target information;

wherein the cloud server is configured to compare the pattern image with the default patterns, so as to determine whether the pattern image is the same as a reference pattern of the default patterns;

wherein when the cloud server determines that the pattern image is the same as the reference pattern of the default patterns, the cloud server calculates the coordinate of the electronic device according to the default coordinate corresponding to the reference pattern, and calculates the coordinate of the electronic device according to a size and an angle of the reference pattern in the environmental image.

2. The navigation system of claim 1 , wherein the electronic device transmits the environmental image with high resolution and the target information to the cloud server, and continuously transmits another environmental image with low resolution to the cloud server according to operations of the cloud server.

3. A navigation method, applied to a navigation system, wherein the navigation system comprises an electronic device and a cloud server, and the navigation method comprises:

capturing an environmental image and transmitting the environmental image and a target information to the cloud server via the electronic device;

analyzing a pattern image of the environmental image according to a plurality of default patterns to compare the pattern image with the default patterns via the cloud server, so as to determine whether the pattern image is the same as a reference pattern of the default patterns and to calculate a coordinate of the electronic device, wherein each of the default patterns corresponds to a default coordinate; and

executing navigation according the coordinate of the electronic device and the target information via the cloud server;

wherein when the pattern image is determined to be the same as the reference pattern of the default patterns, the cloud server calculates the coordinate of the electronic device according to the default coordinate corresponding to the reference pattern;

wherein when the pattern image is determined to be the same as the reference pattern of the default patterns, the cloud server calculates the coordinate of the electronic device according to a size and an angle of the reference pattern in the environmental image.

4. The navigation method of claim 3 , further comprising:

transmitting the environmental image with high resolution and the target information to the cloud server via the electronic device; and

when executing the navigation according to the coordinate of the electronic device and the target information via the cloud serve, continuously transmitting another environmental image with low resolution to the cloud server via the electronic device.