CN110013210A - Method and device for adaptive adjustment of brightness of cold light source in wireless endoscope system - Google Patents

Abstract

The present invention provides a method and device for adaptively adjusting the brightness of a cold light source of a wireless endoscope system. Turn on the corresponding number of lamps for lighting, and collect the image of the target under the illumination of the lamps; after that, divide the image of the target into multiple sub-images, and determine the brightness value and chromaticity value of each sub-image; then, for each sub-image , based on the luminance value of the sub-image, the target luminance value and the luminance value of each pixel in the sub-image, determine the target luminance value of each pixel in the sub-image; finally, for each sub-image, based on the sub-image The chromaticity value, the target chromaticity value and the chromaticity value of each pixel in the sub-image are determined to determine the target chromaticity value of each pixel in the sub-image. The present application solves the defects of limited adjustment range and waste of resources in the light source adjustment of cavity mirrors in the prior art.

Description

Method and device for adaptive adjustment of brightness of cold light source in wireless endoscope system

technical field

The invention relates to the field of medicine, in particular to a method and a device for adaptively adjusting the brightness of a cold light source of a wireless endoscope system.

Background technique

In the medical field, laparoscopy is widely used as an inspection method for the inspection of various diseases. In the process of using laparoscopy, the acquired picture of the detected position needs to be transmitted to the display terminal, so that the doctor can check and judge the lesion at the detected position through the image displayed on the display terminal.

In the process of collecting images, the cavity mirror needs to provide a light source to illuminate the detected position. If the light source is too dark, it will affect the quality of the collected image. If the light source is too bright, it will not only waste energy, but also cause damage to the quality of the image. Therefore, the brightness of the light source in the cavity mirror is relatively high.

In the prior art, the brightness of the light source is generally adjusted by shielding a part of the light source with a shading plate. This method has a limited range of adjusting the brightness of the light source and wastes resources.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides an adaptive adjustment method and device for the brightness of the cold light source of a wireless endoscope system, which solves the problem of limited adjustment range and waste of resources in the adjustment of the light source of the endoscope in the prior art. defect.

(2) Technical solutions

To achieve the above purpose, the present invention is achieved through the following technical solutions:

In a first aspect, an embodiment of the present application provides an adaptive adjustment method for the brightness of a cold light source of a wireless endoscope system, including:

Obtain the target luminance value and target chromaticity value of the cavity mirror light source;

Based on the target luminance value and the target chromaticity value, turn on a corresponding number of lamps for lighting, and collect images of the target object collected under the illumination of the corresponding number of lamps;

dividing the image of the object into a plurality of sub-images, and determining the luminance value of each sub-image and the chromaticity value of each sub-image;

For each sub-image, based on the luminance value of the sub-image, the target luminance value and the luminance value of each pixel in the sub-image, determine the target luminance value of each pixel in the sub-image;

For each sub-image, the target chromaticity value of each pixel in the sub-image is determined based on the chromaticity value of the sub-image, the target chromaticity value, and the chromaticity value of each pixel in the sub-image.

In one possible implementation, the corresponding number of light fixtures that are turned on comprise power adjustable light fixtures.

In a possible implementation manner, the method for adaptively adjusting the brightness of the cold light source of the wireless endoscope system further includes the following steps before determining the target brightness value of each pixel in each sub-image:

determining the average brightness value of the image of the object;

Based on the target brightness value and the average brightness value, the illumination brightness of the power-adjustable lamp is adjusted.

In a possible implementation manner, the method for adaptively adjusting the brightness of the cold light source of the wireless endoscope system is after adjusting the illumination brightness of the power-adjustable lamp and determining the target of each pixel in each sub-image. Before the brightness value, it also includes the following steps:

The image of the current target is acquired, and based on the currently acquired image, the luminance value and the chromaticity value of each sub-image are updated.

In a possible implementation, the corresponding number of lamps that are turned on further include at least one lamp connected in parallel with the power-adjustable lamp.

In a possible implementation manner, the target luminance value of each pixel in the sub-image is determined based on the luminance value of the sub-image, the target luminance value, and the luminance value of each pixel in the sub-image ,include:

determining a brightness adjustment coefficient based on the brightness value of the sub-image and the target brightness value;

Based on the brightness adjustment coefficient and the brightness value of each pixel in the sub-image, the target brightness value of each pixel in the sub-image is determined.

In a second aspect, an embodiment of the present application provides an adaptive adjustment device for the brightness of a cold light source of a wireless endoscope system, including:

The target information determination module is used to obtain the target luminance value and target chromaticity value of the cavity mirror light source;

a lamp opening module, configured to turn on a corresponding number of lamps for lighting based on the target brightness value and the target chromaticity value, and collect images of the target object collected under the illumination of the corresponding number of lamps;

an image information acquisition module, used for dividing the image of the object into a plurality of sub-images, and determining the luminance value of each sub-image and the chromaticity value of each sub-image;

A brightness fine-tuning module for determining, for each sub-image, the target brightness value of each pixel in the sub-image based on the brightness value of the sub-image, the target brightness value and the brightness value of each pixel in the sub-image ;

A chromaticity fine-tuning module for each sub-image, based on the chromaticity value of the sub-image, the target chromaticity value and the chromaticity value of each pixel in the sub-image, to determine each pixel in the sub-image. target chromaticity value.

In a possible implementation, the corresponding number of lamps that are turned on include a power-adjustable lamp, and at least one lamp connected in parallel with the power-adjustable lamp.

In a possible implementation, the apparatus for adaptive adjustment of the brightness of the cold light source of the wireless cavity mirror system further includes a power adjustment module, before the brightness fine adjustment module determines the target brightness value of each pixel in each sub-image , for:

determining the average brightness value of the image of the object;

Based on the target brightness value and the average brightness value, the illumination brightness of the power-adjustable lamp is adjusted.

In a possible implementation manner, the brightness fine-tuning module is specifically used for:

determining a brightness adjustment coefficient based on the brightness value of the sub-image and the target brightness value;

Based on the brightness adjustment coefficient and the brightness value of each pixel in the sub-image, the target brightness value of each pixel in the sub-image is determined.

(3) Beneficial effects

Embodiments of the present invention provide a method and device for adaptively adjusting the brightness of a cold light source of a wireless endoscope system. Has the following beneficial effects:

In the embodiment of the present invention, the target luminance value and target chromaticity value of the cavity mirror light source are first obtained, and then, based on the target luminance value and the target chromaticity value, a corresponding number of lamps are turned on for lighting, and the corresponding number of lamps illuminated in the above-mentioned corresponding number of lamps are collected. The image of the target object under the value, target brightness value and the brightness value of each pixel in the sub-image, determine the target brightness value of each pixel in the sub-image; finally, for each sub-image, based on the chromaticity value of the sub-image, the target color The chromaticity value and the chromaticity value of each pixel in the sub-image determine the target chromaticity value of each pixel in the sub-image. Based on the preset target brightness value and target chromaticity value, the above-mentioned technical solutions of the embodiments of the present application turn on a corresponding number of lamps, thereby improving the brightness adjustment range of the light source, and avoiding the problem of resource waste caused by using the shading plate to adjust the brightness, At the same time, the embodiments of the present application adjust the luminance value and chromaticity value of each pixel in each sub-image block based on the preset target luminance value and target chromaticity value, thereby improving the quality of the image displayed by the cavity mirror.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 schematically shows a flowchart of a method for adaptively adjusting the brightness of a cold light source of a wireless endoscope system according to an embodiment of the present invention;

2 schematically shows a flowchart of a method for adaptively adjusting the brightness of a cold light source of a wireless endoscope system according to another embodiment of the present invention;

3 schematically shows a flowchart of a method for adaptively adjusting the brightness of a cold light source of a wireless endoscope system according to another embodiment of the present invention;

4 schematically shows a block diagram of an apparatus for adaptively adjusting the brightness of a cold light source of a wireless endoscope system according to an embodiment of the present invention;

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to solve the defects of limited adjustment range and waste of resources in the light source adjustment of endoscopes in the prior art, the embodiments of the present application provide an adaptive adjustment method and device for the brightness of a cold light source of a wireless endoscope system, the method or The device turns on a corresponding number of lamps based on the preset target brightness value and the target chromaticity value, which improves the brightness adjustment range of the light source, and avoids the problem of waste of resources caused by adjusting the brightness using the shading plate. Based on the preset target luminance value and the target chromaticity value, the luminance value and chromaticity value of each pixel in each sub-image block are adjusted, thereby improving the quality of the image displayed by the cavity mirror.

For the automatic brightness adjustment scheme of the endoscope in the prior art, the brightness is adjusted by means of a shading plate, which does not save energy and results in a waste of resources. In addition, the method of fixing the shielding plate to cover the shielding hole has the defect that the adjustable brightness value range is limited, and the adjustable brightness can only be a fixed value by setting the number of powered LED lights. The application provides a wireless internal An adaptive adjustment method and device for the brightness of a cold light source of a speculum system. The method or device turns on a corresponding number of lamps based on a preset target brightness value and a target chromaticity value, thereby improving the brightness adjustment range of the light source and avoiding the use of shading. At the same time, the embodiment of the present application adjusts the luminance value and chromaticity value of each pixel in each sub-image block based on the preset target luminance value and target chromaticity value, which improves the The quality of the image displayed by the endoscope. In addition, the method or device of the embodiments of the present application realizes wide-range and high-precision adjustment of the brightness of the cavity mirror light source by controlling the power of the power-adjustable lamp.

The method for adaptively adjusting the brightness of the cold light source of the wireless endoscope system provided by the embodiment of the present application will be described in detail below. The method for adaptively adjusting the brightness of the cold light source of the wireless endoscope system according to the embodiment of the present application is performed by the light source adjusting component of the endoscope. Specifically, as shown in FIG. The adjustment method includes the following steps:

S110. Acquire a target luminance value and a target chromaticity value of the cavity mirror light source.

This step is completed by the target information acquisition module of the cavity mirror, and the target luminance value and target chromaticity value are preset by the user according to specific requirements before adjusting the luminance of the light source. The target luminance value and the target chrominance value are the luminance value and chrominance value of the image to be adjusted.

S120. Based on the target luminance value and the target chromaticity value, turn on a corresponding number of lamps for lighting, and collect an image of the target object illuminated by the corresponding number of lamps.

This step is completed by the lamp opening module of the cavity mirror. According to the preset target brightness value and target chromaticity value, the number of lamps to be turned on can be determined. In the specific implementation, if the target brightness value and the target chromaticity value are larger, the lamp will be turned on. On the contrary, if the target luminance value and target chromaticity value are small, the number of lamps turned on is small.

The lamps in this step are preferably LEDs or the like.

S130. Divide the image of the target into a plurality of sub-images, and determine the luminance value of each sub-image and the chromaticity value of each sub-image.

This step is completed by the image information acquisition module of the cavity mirror. In this step, the image of the target object is firstly divided into a plurality of sub-images, and then the actual luminance value and the actual chromaticity value of each sub-image are determined respectively.

The image information acquisition module calls the Opencv interface to analyze the collected cavity mirror image, and separates the brightness and chromaticity information of the image. In particular, the pixels of each cavity mirror image are clustered into k blocks according to the luminance information, the luminance value and chromaticity value of each block are calculated separately, and the average luminance value and average chromaticity value of the entire image are obtained.

S140. For each sub-image, determine the target luminance value of each pixel in the sub-image based on the luminance value of the sub-image, the target luminance value, and the luminance value of each pixel in the sub-image.

This step is completed by the brightness fine-tuning module of the cavity mirror. After the actual brightness value and the preset target brightness value of each sub-image are acquired, this step can be used to fine-tune the brightness value of each sub-image, so as to improve the quality of the image.

The brightness value of the image is determined by the brightness value of the pixel point in the image, therefore, the adjustment of the brightness of the image can be realized by adjusting the brightness value of the pixel point in the image.

S150. For each sub-image, based on the chromaticity value of the sub-image, the target chromaticity value, and the chromaticity value of each pixel in the sub-image, determine the target chromaticity value of each pixel in the sub-image .

This step is completed by the chromaticity fine-tuning module of the cavity mirror. After obtaining the actual chromaticity value of each sub-image and the preset target chromaticity value, this step and the average chromaticity value can be used to fine-tune the chromaticity value of each sub-image to improve image quality.

In some embodiments, the corresponding number of light fixtures that are turned on include a power adjustable light fixture and a plurality of power non-adjustable light fixtures. In a specific implementation, a plurality of lamps with non-adjustable power are connected in parallel with the rate-adjustable lamps, each parallel circuit is provided with a switch, and a main switch is installed on the main circuit. Among them, the high-performance LED lamp includes a transformer in series with a parallel circuit where the power-adjustable lamp is located, which can control the voltage input to the high-performance LED lamp, thereby controlling the luminous power of the LED lamp. And using the high-performance LED lamp under different voltages has little effect on its life.

In some embodiments, as shown in FIG. 2 , before determining the target brightness value of each pixel in each sub-image, the method for adaptively adjusting the brightness of the cold light source of the wireless endoscope system according to the embodiment of the present application further includes the following steps :

S210. Determine the average brightness value of the image of the target object.

This step is completed by the image information acquisition module of the cavity mirror. During specific implementation, the average brightness value of the image of the target object can be determined according to the brightness value of each sub-image.

S220. Based on the target brightness value and the average brightness value, adjust the illumination brightness of the power-adjustable lamp.

This step is completed by the power adjustment module of the cavity mirror. During the specific implementation, if the target brightness value is higher than the average brightness of the image of the target object, the input voltage of the power adjustable lamp is increased to improve the illumination brightness of the power adjustable lamp. Until the target brightness value is equal to the average image brightness of the target object; on the contrary, if the target brightness value is lower than the average image brightness of the target object, reduce the input voltage of the power adjustable lamp to reduce the illumination brightness of the power adjustable lamp until the target The brightness value is equal to the average brightness of the image of the object.

S230: Collect the current image of the target object, and update the luminance value and the chromaticity value of each sub-image based on the currently collected image.

This step is completed by the image information acquisition module of the cavity mirror, and is used for re-acquiring images after adjusting the brightness of the light source, and updating the brightness value and chromaticity value of each sub-image. In addition, in this step, the image information acquisition module of the cavity mirror is also used to re-determine the average luminance value and the average chromaticity value of the entire image of the target object.

In some embodiments, as shown in FIG. 3 , the brightness fine-tuning module determines each pixel in the sub-image based on the brightness value of the sub-image, the target brightness value and the brightness value of each pixel in the sub-image. When the target brightness value of the pixel is determined, the following steps are used to achieve:

S310. Determine a brightness adjustment coefficient based on the brightness value of the sub-image and the target brightness value.

In specific implementation, the brightness adjustment coefficient can be determined by using the formula:

In the formula, B _i represents the brightness adjustment coefficient, y ₀ represents the standard brightness value, and y _i represents the brightness value of the sub-image i.

S320: Determine the target brightness value of each pixel in the sub-image based on the brightness adjustment coefficient and the brightness value of each pixel in the sub-image.

In specific implementation, the target brightness value of each pixel can be determined by using the formula:

In the formula, yij represents the brightness value of pixel j in sub-image i, B _i represents the brightness adjustment coefficient, and yij represents the target brightness value of pixel j in sub-image i.

The above-mentioned method of the embodiment of the present invention realizes that the brightness of the cavity mirror light source can be selected from multiple gears, and the required gear can be automatically selected according to the needs of the user. And through the power adjustment module, the cavity mirror cold light source is precisely adjusted to save energy to the greatest extent. Finally, the image post-processing technology fine-tunes the generated cavity mirror image through fine-tuning of image brightness and image chromaticity to obtain the brightness and chromaticity effects desired by the user.

As shown in FIG. 4 , an embodiment of the present application also provides an adaptive adjustment device for the brightness of a cold light source of a wireless endoscope system, including:

a target information determination module 410, configured to acquire a target luminance value and a target chromaticity value of the cavity mirror light source;

A lamp turn-on module 420, configured to turn on a corresponding number of lamps for lighting based on the target luminance value and the target chromaticity value, and collect an image of the target object collected under the illumination of the corresponding number of lamps;

an image information acquisition module 430, configured to divide the image of the target object into a plurality of sub-images, and determine the luminance value of each sub-image and the chromaticity value of each sub-image;

The brightness fine-tuning module 440 is configured to, for each sub-image, determine the target brightness of each pixel in the sub-image based on the brightness value of the sub-image, the target brightness value and the brightness value of each pixel in the sub-image value;

The chromaticity fine-tuning module 450 is configured to, for each sub-image, determine each pixel in the sub-image based on the chromaticity value of the sub-image, the target chromaticity value and the chromaticity value of each pixel in the sub-image The target chromaticity value of the point.

In some embodiments, the corresponding number of light fixtures that are turned on include a power adjustable light fixture, at least one light fixture in parallel with the power adjustable light fixture.

In some embodiments, the apparatus for adaptive adjustment of the brightness of the cold light source of the wireless cavity mirror system further includes a power adjustment module 460, the power adjustment module before the brightness adjustment module determines the target brightness value of each pixel in each sub-image , for:

determining the average brightness value of the image of the object;

Based on the target brightness value and the average brightness value, the illumination brightness of the power-adjustable lamp is adjusted.

In some embodiments, the brightness fine-tuning module 440 is specifically used for:

determining a brightness adjustment coefficient based on the brightness value of the sub-image and the target brightness value;

Based on the brightness adjustment coefficient and the brightness value of each pixel in the sub-image, the target brightness value of each pixel in the sub-image is determined.

Each step in the method of the embodiment of the present invention corresponds one-to-one with the step in the adaptive adjustment process of the brightness of the cold light source of the wireless endoscope system by the device of the embodiment of the present invention. Each step in the self-adaptive adjustment process of the brightness of the cold light source of the endoscope system is included in the method of the embodiment of the present invention. Therefore, repeated parts are not repeated here.

The embodiment of the present application can accurately adjust the cold light source of the wireless cavity mirror system, and save energy to the greatest extent; when fine-tuning the image, instead of directly fine-tuning the entire image, a block-based image fine-tuning after clustering is used. . The brightness and chromaticity of the image obtained in this way more meet the needs of users; while fine-tuning the brightness, the chromaticity of the image is fine-tuned to prevent the image from being unreal; In parallel, instead of a single cold light source module.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. a kind of adaptive regulation method of wireless endoscope system cold light source brightness characterized by comprising

Obtain the target brightness value and aim colour angle value of hysteroscope light source；

Based on the target brightness value and the aim colour angle value, the lamps and lanterns for opening corresponding number are illuminated, and are acquired in institute State the image of the object under the lamps and lanterns irradiation of corresponding number；

By the image segmentation of the object it is multiple subgraphs, and determines the brightness value of each subgraph, each subgraph Chromatic value；

For each subgraph, each pixel in brightness value, the target brightness value and the subgraph based on the subgraph The brightness value of point, determines the target brightness value of each pixel in the subgraph；

For each subgraph, each pixel in chromatic value, the aim colour angle value and the subgraph based on the subgraph The chromatic value of point, determines the aim colour angle value of each pixel in the subgraph.

2. the method according to claim 1, wherein the lamps and lanterns for the corresponding number opened include power adjustable Save lamps and lanterns.

3. according to the method described in claim 2, it is characterized in that, the method each pixel in determining each subgraph Target brightness value before, further include following steps:

Determine the average brightness value of the image of the object；

Based on the target brightness value, the average brightness value, the irradiation brightness of the power adjustable section lamps and lanterns is adjusted.

4. according to the method described in claim 3, it is characterized in that, the method is in the photograph for adjusting the power adjustable section lamps and lanterns It penetrates after brightness, and further includes following steps in determining each subgraph before the target brightness value of each pixel:

The image of current object is acquired, and based on the image currently acquired, updates the brightness value and coloration of each subgraph Value.

5. according to the method described in claim 2, it is characterized in that, the lamps and lanterns of the corresponding number of the unlatching further include with At least one lamps and lanterns of the power adjustable section lamps and lanterns parallel connection.

6. method according to any one of claims 1 to 5, which is characterized in that the brightness value based on the subgraph, institute The brightness value for stating each pixel in target brightness value and the subgraph determines that the target of each pixel in the subgraph is bright Angle value, comprising:

Brightness value, the target brightness value based on the subgraph, determine brightness regulation coefficient；

Based on the brightness value of each pixel in the brightness regulation coefficient, the subgraph, each pixel in the subgraph is determined The target brightness value of point.

7. a kind of self-adaptive regulating of wireless endoscope system cold light source brightness characterized by comprising

Target information determining module, for obtaining the target brightness value and aim colour angle value of hysteroscope light source；

Lamps and lanterns opening module, for being based on the target brightness value and the aim colour angle value, open the lamps and lanterns of corresponding number into Row illumination, and acquire the image of the object acquired under the irradiation such as lamp of the corresponding number；

Image information collecting module for being multiple subgraphs by the image segmentation of the object, and determines each subgraph Brightness value, each subgraph chromatic value；

Module is finely tuned in brightness, is used for brightness value, the target brightness value for each subgraph, based on the subgraph and is somebody's turn to do The brightness value of each pixel in subgraph, determines the target brightness value of each pixel in the subgraph；

Coloration finely tunes module, is used for chromatic value, the aim colour angle value for each subgraph, based on the subgraph and is somebody's turn to do The chromatic value of each pixel in subgraph determines the aim colour angle value of each pixel in the subgraph.

8. device according to claim 7, which is characterized in that the lamps and lanterns of the corresponding number of unlatching include power adjustable Save lamps and lanterns, at least one lamps and lanterns in parallel with the power adjustable section lamps and lanterns.

9. device according to claim 8, which is characterized in that described device further includes power conditioning module, the power Adjustment module determines in each subgraph before the target brightness value of each pixel in brightness fine tuning module, is used for:

Determine the average brightness value of the image of the object；

Based on the target brightness value, the average brightness value, the irradiation brightness of the power adjustable section lamps and lanterns is adjusted.

10. device according to any one of claims 7 to 9, which is characterized in that the brightness fine tuning module is specifically used for:

Brightness value, the target brightness value based on the subgraph, determine brightness regulation coefficient；

Based on the brightness value of each pixel in the brightness regulation coefficient, the subgraph, each pixel in the subgraph is determined The target brightness value of point.