Static-image signal generation apparatus using fuzzy theory
First Claim
1. A static-image signal generation apparatus using fuzzy theory, comprising:
- movement detection means that detects the movement amount of an image on the basis of an image signal which is input in correspondence with the image of an object and outputs a movement signal corresponding to said movement amount;
gradient detection means that detects the gradient of a movement amount on the basis of said movement signal output from said movement detection means;
minimum value detection means that detects a minimum value of movement amounts on the basis of said movement signal output from said movement detection means;
static-image specifying means that outputs a static image specifying signal for specifying a static image;
detection time setting means, actuated by said static image specifying signal, that sets the detection time for a minimum value detection by said minimum value detection means using fuzzy inference as factors for inferring respective outputs of said movement detection means and said gradient detection means; and
image storage/record means for retaining image signals corresponding to the smallest movement amount detected by said minimum value detection means within said detection time as a static image.
1 Assignment
0 Petitions
Accused Products
Abstract
A movement amount detected by a movement detection circuit on the basis of an image signal corresponding to an object image is input to a minimum value detection circuit. This detection circuit sets an operation time for the detection of the minimum value by using fuzzy inference on the basis of the movement amount and the gradient amount of the movement. An image signal corresponding to the smallest movement amount in this operation time is retained in a freeze memory. In this case, the operation time is set by fuzzy inference by using the movement amount and the gradient amount as factors for fuzzy inference so that the operation time can be set automatically to a time suitable for obtaining static images possessing a small amount of movement.
42 Citations
19 Claims
-
1. A static-image signal generation apparatus using fuzzy theory, comprising:
-
movement detection means that detects the movement amount of an image on the basis of an image signal which is input in correspondence with the image of an object and outputs a movement signal corresponding to said movement amount; gradient detection means that detects the gradient of a movement amount on the basis of said movement signal output from said movement detection means; minimum value detection means that detects a minimum value of movement amounts on the basis of said movement signal output from said movement detection means; static-image specifying means that outputs a static image specifying signal for specifying a static image; detection time setting means, actuated by said static image specifying signal, that sets the detection time for a minimum value detection by said minimum value detection means using fuzzy inference as factors for inferring respective outputs of said movement detection means and said gradient detection means; and image storage/record means for retaining image signals corresponding to the smallest movement amount detected by said minimum value detection means within said detection time as a static image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An endoscope apparatus, comprising:
-
an endoscope having a long and narrow insertion section, an illumination light emission means for emitting illumination light from the front end of said insertion section, an object optical system disposed on the front end of said insertion section for forming the image of an object, and a solid-state image pickup device for photoelectrically converting optical images based on said optical system; drive signal generation means for outputting drive signals by which signals photoelectrically converted by said solid-state image pickup device are read out; signal processing means for performing signal processing on signals output from said solid-state image pickup device; monitor means on which standard video signals output from said signal processing means are displayed; and static-image signal generation means having a movement detection means that detects the movement amount of said object image on the basis of the image signal of the input end or the output end of said signal processing means and that outputs a movement signal corresponding to said movement amount, a gradient detection means that detects the gradient of the movement amount on the basis of said movement signal output from said movement detection means, a minimum value detection means that detects the minimum value of a movement amount on the basis of said movement signal output from said movement detection means, a static-image specifying means that outputs a static-image specifying signal specifying a static image, a detection time setting means, actuated by said static-image specifying signal, that sets a detection time for the minimum value detection by means of said minimum value detection means by using a fuzzy inference means as factors for inferring the outputs of said movement detection means and said gradient detection means, and an image storage/record means for retaining image signals corresponding to the smallest movement amount detected by said minimum value detection means within said detection time as a static image. - View Dependent Claims (13, 14)
-
-
15. A static-image signal generation method, comprising the steps of:
-
detecting the movement amount of an image on the basis of input image signals in correspondence with an object image; detecting the gradient of a movement amount on the basis of a signal corresponding to the movement amount output in said movement detection step; detecting the minimum value of said movement amount on the basis of a signal corresponding to said movement amount, the step of which is actuated by a static-image specifying signal; setting a detection time for the minimum value detection in said minimum value detection step by fuzzy inference, as factors for fuzzy-inferring signals output in both said movement detection step and said gradient detection step; and storing/recording image signals corresponding to the smallest movement amount detected in said minimum value detection step within said detection time as a static image. - View Dependent Claims (16, 17, 18)
-
-
19. An endoscope apparatus, comprising:
-
an endoscope having a long and narrow insertion section, an illumination light emission means for emitting illumination light from the front end of said insertion section, an object optical system disposed on the front end of said insertion section for forming the image of an object, and a solid-state image pickup device for photoelectrically converting an optical image based on said optical system; signal processing means for performing signal processing on signals outputted from said solid-state image pickup device; monitor means on which standard video signals outputted from said signal processing means are displayed; and fuzzy inference means, contained in at least one of said illumination light emission means, said endoscope, said signal processing means, and said monitor means, for setting detection time in which said signals are processed.
-
Specification