Patent ID: 11861844
Assignee: GREAT WALL MOTOR COMPANY LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A vehicle, wherein the vehicle comprises a calculating and processing device for acquiring a three-value-processed image, wherein the calculating and processing device comprises a processor and a memory, wherein the memory stores a program code for implementing the operations of:
in a process of travelling of a vehicle, acquiring image data of an object to be identified;
acquiring first differential-image data of the image data;
by performing predetermined processing to an image in an image database that corresponds to the object to be identified, obtaining a three-value-processing coefficient;
according to a product between the three-value-processing coefficient and a maximum pixel value in the first differential-image data, obtaining a three-value-processing threshold; and
by application of the three-value-processing threshold in the differential-image data, obtaining the three-value-processed image;
wherein the operation of, by performing the predetermined processing to the image in the image database that corresponds to the object to be identified, obtaining the three-value-processing coefficient comprises:
performing difference processing to the image in the image database that corresponds to the object to be identified, to obtain second differential-image data;
by normalizing the second differential-image data, acquiring a differential-value distribution and a cumulative differential-value distribution of the second differential-image data; and
according to the differential-value distribution and the cumulative differential-value distribution, acquiring a ratio of a separated noise to a signal in the second differential-image data, and determining the ratio to be the three-value-processing coefficient.