Fire detection and smoke detection method and system based on image processing
First Claim
Patent Images
1. A fire detection and smoke detection method based on image processing comprising following steps:
- (a) capturing images of a predetermined area by an image capturing device;
(b) detecting number of flame pixels of each image by determining if each pixel of each image satisfies the following conditions;
R>
RT;
R≧
G>
B; and
S≧
((255−
R)*ST/RT);
wherein R, G, B are red, green, blue gray levels of the pixel respectively, RT is a threshold of the red gray level, S is saturation of the pixel, and ST is saturation of the pixel when the red gray level of the pixel equals RT;
(c) detecting number of smoke pixels of each image;
(d) generating a value according to the number of flame pixels and the number of smoke pixels of each image by a fuzzy system; and
(e) comparing values generated from images captured within a predetermined time interval to generate a comparison result.
1 Assignment
0 Petitions
Accused Products
Abstract
Fire detection and smoke detection use an image capturing device to obtain images from a predetermined area and adopts an RGB (red, green, blue) color model based chromatic and disorder measurement for extracting fire pixels and smoke pixels. The extracted pixels are inputted to a fire detection fuzzy alarm system to generate an output of alarm information. Based on iterative checking on the growing ratio of the alarm information, a fire alarm is released accordingly.
14 Citations
12 Claims
-
1. A fire detection and smoke detection method based on image processing comprising following steps:
-
(a) capturing images of a predetermined area by an image capturing device; (b) detecting number of flame pixels of each image by determining if each pixel of each image satisfies the following conditions;
R>
RT;
R≧
G>
B; and
S≧
((255−
R)*ST/RT);wherein R, G, B are red, green, blue gray levels of the pixel respectively, RT is a threshold of the red gray level, S is saturation of the pixel, and ST is saturation of the pixel when the red gray level of the pixel equals RT; (c) detecting number of smoke pixels of each image; (d) generating a value according to the number of flame pixels and the number of smoke pixels of each image by a fuzzy system; and (e) comparing values generated from images captured within a predetermined time interval to generate a comparison result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A fire detection and smoke detection system based on image processing comprising:
-
an image capturing device for capturing images of a predetermined area; means for detecting number of flame pixels and number of smoke pixels of each image captured by the image capturing device by determining if each pixel of each image satisfies the following conditions;
R>
RT;
R≧
G>
B; and
S≧
((255−
R)*ST/RT);wherein R,G, B are red, green, blue gray levels of the pixel respectively, RT is a threshold of the red gray level, S is saturation of the pixel, and ST is saturation of the pixel when the red gray level of the pixel equals RT; a fuzzy system for generating a value according to the number of flame pixels and the number of smoke pixels of each image; and means for comparing values generated from images captured by the image capturing device within a predetermined time interval to generate a comparison result. - View Dependent Claims (10, 11, 12)
-
Specification