WO2015032363A1

WO2015032363A1 - Pseudo-color control device and method

Info

Publication number: WO2015032363A1
Application number: PCT/CN2014/086166
Authority: WO
Inventors: 王浩
Original assignee: Wang Hao
Priority date: 2013-09-09
Filing date: 2014-09-09
Publication date: 2015-03-12
Also published as: CN104422523A

Abstract

The present invention relates to the application field of thermal image processing devices and infrared detection. Provided are a pseudo-color control device and method. Thermal imaging devices in the prior art employ the method of manually adjusting the range of a pseudo-color plate, resulting in a large workload; in addition, the range of the pseudo-color plate is automatically determined according to the temperature range of thermal image data (or the range of an AD value), and the presence of a high-temperature object in the thermal image dramatically affects the thermal image of a photo subject to be observed. The pseudo-color control device and method of the present invention utilizes a pseudo-color parameter associated with a first selected thermal image data frame as the pseudo-color parameter of a second thermal image data frame, thus facilitating setting the pseudo-color parameter of an infrared thermal image for easy comparison.

Description

Pseudo color control device and pseudo color control method

Technical field

The pseudo color control device and the pseudo color control method of the invention relate to a thermal image processing device and an application field of infrared detection.

Background technique

At present, an infrared thermal image is obtained by performing a corresponding pseudo color setting on the thermal image data frame to perform state evaluation of the object. As shown in the schematic diagram of the infrared thermal image and the pseudo color plate shown in FIG. 3, the grayscale pseudo color is from black to white corresponding to a temperature range of 10-35 ° C (or a range of thermal image AD values) as a pseudo color plate range; usually according to heat Like the temperature range of the data (or the range of thermal image AD values) to automatically determine the pseudo color plate range, or manually adjust the pseudo color plate range, set the temperature range (or range of thermal image AD values) to determine the corresponding pseudo color plate range The image data of the infrared thermal image is obtained by taking the temperature value (or the thermal image AD value) of each pixel in the pseudo color plate range corresponding to the specific color value as the image data of the corresponding pixel position in the infrared thermal image.

The method of manually adjusting the range of the pseudo color plate is cumbersome, and the user needs to drag the upper and lower thresholds of the pseudo color plate to adjust the range of the false color plate. A more difficult operation is not observed when the range of false color plates as a contrast infrared thermal image is not observed.

According to the temperature range of the thermal image data (or the range of the thermal image AD value), the range of the pseudo color plate is automatically determined, and when there is a high temperature object in the thermal image, the thermal image of the object to be observed is greatly affected. The infrared thermal image obtained by automatically determining the range of the pseudo color plate shown in FIG. 4, as shown in FIG. 4(a), the infrared thermal image 401, the range of the pseudo color plate is 10-35 ° C; as shown in FIG. 4 (b) Infrared thermal image 402, due to the temperature source 404 of 55 ° C in the background, the range of the pseudo color plate is 10-55 ° C; at this time, due to the difference of the range of the pseudo color plate, the infrared thermal image 401 and the infrared thermal image 402 The color or the gradation is different, and the user is not allowed to judge whether the image is different due to the difference in the image color or the temperature difference of the subject's thermal image itself. In addition, different pseudo color plates (such as grayscale, iron red, feather red, etc.) are also not conducive to visual comparison between infrared thermal images.

Therefore, it is understood that there is a need for a pseudo color control device that can achieve an erroneous operation without requiring a user, and is convenient for setting an infrared thermal image that facilitates visual comparison of different subject thermal images.

Summary of the invention

The invention provides a pseudo color control device and a pseudo color control method, which can use the pseudo color parameter associated with the selected first thermal image data frame as a pseudo color parameter of the second thermal image data frame; The pseudo-color parameter of the infrared thermal image compared with the body heat image.

To this end, the present invention adopts the following technical solutions, and the pseudo color control device includes:

An acquisition unit, configured to acquire a thermal image data frame;

a first selection unit, configured to select a first thermal image data frame;

a second selection unit, configured to select a second thermal image data frame;

The pseudo color setting unit is configured to use the pseudo color parameter associated with the selected first thermal image data frame as a pseudo color parameter of the second thermal image data frame, and the pseudo color parameter includes at least a pseudo color plate range.

The invention also provides a pseudo color control method, which has:

An obtaining step of acquiring a thermal image data frame;

a first selecting step of selecting a first thermal image data frame;

a second selecting step of selecting a second thermal image data frame;

And a pseudo color setting step, configured to use the pseudo color parameter associated with the selected first thermal image data frame as a pseudo color parameter of the second thermal image data frame.

Other aspects and advantages of the invention will be set forth in the description which follows.

BRIEF DESCRIPTION OF THE DRAWINGS:

Fig. 1 is a block diagram showing the electrical configuration of a pseudo color control device of the first embodiment.

Fig. 2 is a perspective view showing the pseudo color control device of the first embodiment.

Fig. 3 is a view showing an example of an infrared thermal image and a pseudo color plate.

Fig. 4 is a view showing an example of display of an infrared thermal image obtained by automatically setting a pseudo color plate range in the prior art.

Fig. 5 is a view showing an example of display of a display interface of the pseudo color control device of the first embodiment;

Fig. 6 is a view showing an example of display of an infrared thermal image obtained by the pseudo color control device of the first embodiment.

Fig. 7 is a control flow chart of the pseudo color control device of the first embodiment.

Fig. 8 is an external view of another pseudo color control device of the embodiment.

detailed description

Embodiments of the present invention will be described below. Although the present invention exemplifies a pseudo color control device 1 for processing a thermal image file, such as a processing device such as a personal computer or a personal digital processing device, in Embodiment 1, it is also applicable to The thermal image capturing device of the thermal image capturing function (as shown in Fig. 8, for example, pseudo color adjustment of the reproduced thermal image file, etc.).

Embodiment 1, Fig. 1 is a block diagram showing an electrical configuration of a pseudo color control device 1 of the present invention.

The pseudo color control device 1 of the present embodiment includes a CPU 2 that performs overall control, a RAM 3 that is connected to the CPU 2 via a bus, a display unit 4, a hard disk 5, an auxiliary storage unit 6, an operation unit 7, and a communication unit 8.

Referring to the external view of the pseudo color control device 1 shown in FIG. 2, the pseudo color control device 1 may be a computer, a PDA, a dedicated display processing device or a dedicated pseudo color control device 1.

The RAM 3 temporarily stores various data temporarily generated by the CPU 2 executing the program.

The display unit 4, such as a liquid crystal display, performs display based on the control of the CPU 2. Not limited to this, the display unit 4 may be another display connected to the image processing device 1 , and the display device 1 itself may have no display in its electrical configuration.

The hard disk 5 stores programs for control and various data used in the control.

The auxiliary storage unit 6, for example, a storage medium such as a CD-ROM or a memory card, and an associated interface.

The operation unit 7 is for the user to give an instruction to the pseudo color control device 1, or to input setting information, and the CPU 2 executes the corresponding program based on the operation signal of the operation unit 7. The operation unit 7 is configured by, for example, a keyboard, a mouse, or the like, and is not limited thereto. The operation can be realized by using a touch panel or a voice control unit.

The communication unit 8 is a communication device that connects the pseudo color control device 1 to an external device in accordance with a communication specification such as USB, 1394, or network.

The CPU 2 controls the overall operation of the pseudo color control device 1, and the control program stored in the hard disk 5 causes the CPU 2 to execute the corresponding processing. The CPU 2 performs predetermined image processing on the acquired thermal image data frame, and performs image processing such as correction, compression, decompression, interpolation, pseudo color, composition, and the like, and converts the data into data suitable for recording, display, and the like. According to different formats of the thermal image data frame, for example, when the processed thermal image data frame contains thermal image data as thermal image AD value data, the CPU 2 performs corresponding prescribed processing such as pseudo color processing, for example, according to the thermal image. The range of the thermal image AD value of the data or the setting range of the thermal image AD value is used to determine the corresponding pseudo color plate range, and the specific color value corresponding to each thermal image AD value in the pseudo color plate range is taken as its infrared thermal image. The image data of the infrared thermal image is obtained corresponding to the image data of the pixel position, and the predetermined processing is also performed in various predetermined processes such as correction and interpolation in the decompressed thermal image data frame.

The CPU 2 functions as an acquisition unit for acquiring a thermal image data frame; for example, selecting a thermal image data frame to be processed from a storage medium such as the auxiliary storage unit 6 or the hard disk 5, and further, wired or wirelessly connecting from the communication unit 8 to an external device. The acquired thermal image data frame, such as an external storage device or a thermal image capturing device connected to the pseudo color control device 1, obtains a thermal image data frame to be processed. The thermal image data frame, such as a thermal image file. The thermal image data frame may include thermal image AD value data, image data of an infrared thermal image, array data of temperature values, or compressed data.

The CPU 2 serves as a first selection unit for selecting a first thermal image data frame; for example, the user can adjust the pseudo color parameter (pseudo color plate range, or pseudo color plate and pseudo color plate range) of the current thermal image data frame. After the pseudo color parameter is stored in association with the thermal image data frame, the first thermal image data frame is selected, and the pseudo color parameter associated with the first thermal image data frame can be used as a pseudo color parameter of the subsequent thermal image data frame. To ensure that the thermal image data frame of the subsequent processing is consistent with the pseudo color effect of the first thermal image data frame.

The CPU 2 is used as a second selection unit for selecting a second thermal image data frame; for example, the user can select a thermal image data frame to be processed as a second thermal image data frame; or, according to the first thermal image data frame, The information, such as subject information and/or shooting parameter information, etc., selects the second thermal image data frame. The second thermal image data frame may be selected according to one or more of the information associated with the first thermal image data frame. For example, the object information associated with the first thermal image data frame is a “voltage transformer”, and other thermal image data frames associated with the object information as “voltage transformers” in the storage medium may be selected as the second thermal image. A data frame in which the subject information is information related to the subject, such as a combination of one or more of information representing a subject's location, type, number, name, and the like. Further, the second thermal image data frame may be selected according to shooting parameter information such as shooting time, ambient temperature, shooting distance, wind speed, humidity, and the like, and parameters and information related to shooting. This can further reduce the user's operational workload, such as the comparison between the thermal images of the subject. In addition, the associated information is also information such as the load and the rotational speed of the object at the time of shooting, and the information associated with the thermal image data frame may be acquired at the time of shooting, or the related information may be added to the background computer for the thermal image data frame. . Obviously, the second thermal image data frame can be one or more frames.

The CPU 2 serves as a configuration unit for configuring information related to the pseudo color setting according to the user's operation based on the information associated with the first thermal image data frame, and the second selection unit is configured to, according to the configured information, To select the second thermal image data frame. For example, the information associated with the first thermal image data frame includes the subject information “voltage transformer”, and the user can set the subject information “voltage transformer” to the information related to the pseudo color setting, and then automatically store the information. Other thermal image data frames associated with the subject information as "voltage transformers" in the medium are selected as second thermal image data frames. The information related to the pseudo color setting may be configured according to one or more of the information associated with the first thermal image data frame.

The CPU 2 functions as a pseudo color setting unit for using a pseudo color parameter associated with the selected first thermal image data frame as a pseudo color parameter of the second thermal image data frame. The pseudo color parameter may be a pseudo color plate range or may also include a pseudo color plate.

Further, the CPU 2 functions as a pseudo color portion for processing the second thermal image data frame according to the pseudo color parameter to obtain an infrared thermal image.

Further, the CPU 2 functions as a recording unit for recording the pseudo color parameter in association with the second thermal image data frame selected by the second selection unit. Thus, in the subsequent pseudo color processing, the pseudo color parameter associated with the thermal image data frame can be directly called to obtain the infrared thermal image. Since the pseudo color plate is easily set to be suitable for all the thermal image data frames to be processed, only the pseudo color plate range can be recorded.

A display example of the display interface of the pseudo color control device 1 of the first embodiment will be described with reference to FIG.

Including, open 501 (a selection menu item of a file) for selecting a thermal image data frame (such as a thermal image file) to be processed from a storage medium such as the hard disk 5.

Apply the previous frame of pseudo color 502. In the display state of the current frame, click “Apply the previous frame pseudo color 502”, then automatically use the previous frame thermal image data frame as the first thermal image data frame, and the previous frame thermal image. The pseudo color parameter associated with the data frame is used as the pseudo color parameter of the current frame.

The same subject information pseudo color 503, in the display state of the current frame, click "same subject information pseudo color 503", then automatically use the current frame as the first thermal image data frame, the pseudo color associated with the current frame The parameter is applied to a thermal image data frame associated with the same subject information.

The same shooting parameter pseudo color 504, in the display state of the current frame, click "the same shooting parameter pseudo color 504", then automatically the current frame as the first thermal image data frame, according to the pseudo color parameter associated with the current frame, applied to Associate a thermal image data frame with the same shooting parameters.

Save 505, in the display state of the current frame, click "Save 505" to record the current frame and the set pseudo color parameters.

The above is merely an example and is not limited. For example, a menu item of “first thermal image data frame” and “second thermal image data frame” may be configured for selecting or specifying the first thermal image data frame and the second heat. Like data frames; obviously the choice of the first thermal image data frame and the second thermal image data frame can be varied in various ways.

The control flow of Embodiment 1 will be described with reference to FIG.

After the pseudo color control device 1 is activated, the CPU 2 performs its control to display a processing interface, and the user determines the thermal image data frame to be processed by, for example, selecting a thermal image file stored in the auxiliary storage unit 6 or the hard disk 5. Further, the thermal image data frame acquired from the communication unit 8 and connected to the external device may be connected to an external storage device or a thermal image capturing device to obtain a thermal image data frame to be processed. Among them, the infrared thermal image obtained by the thermal image data frame may not be displayed.

Step A01, selecting a first thermal image data frame, for example, performing pseudo color parameter adjustment on the current thermal image data frame, obtaining an infrared thermal image 401 as shown in FIG. 6(a), and adjusting the pseudo color parameter obtained after the adjustment The thermal image data frame is associated with the record, and then, when the display is read in the next frame, click "Apply the previous frame pseudo color 502" to select the previous thermal image data frame as the first thermal image data frame.

Step A02, selecting a second thermal image data frame; for example, as a second thermal image data frame for a subsequent predetermined number of thermal image data frames; preferably, selecting a subsequent first thermal image data frame as the second thermal image data frame As shown in FIG. 5, the thermal image data frame is opened and displayed to obtain the infrared thermal image 402. When the user clicks “Apply the previous frame pseudo color 502”, the currently displayed frame is used as the second thermal image data frame.

In step A03, the pseudo color parameter associated with the first thermal image data frame is used as the pseudo color parameter of the second thermal image data frame; after that, the associated recording of the pseudo color parameter and the thermal image data frame, or the pseudo color processing may be performed. This can save the workload of manually adjusting the pseudo-color parameters frame by frame, and can avoid the problems caused by automatically adjusting the pseudo-color parameters.

Step A04, processing the infrared thermal image after obtaining the pseudo color of the second thermal image data frame. As shown in FIG. 6(b), the infrared thermal image 403 is pseudo-color processed according to the pseudo color parameter associated with the infrared thermal image 401 shown in FIG. 6(a), so the pseudo color range of the two is the same, and the pseudo color is the same. The boards are consistent, which is convenient for users to compare.

Step A05, determining whether to exit, if not, returning to step A01, at this time, if the user opens a new thermal image data frame, when clicking "previous frame pseudo color 502", the current frame is taken as the second thermal image. The data frame, and the thermal image data frame corresponding to the infrared thermal image 403 is selected as the first thermal image data frame.

As described above, the pseudo color parameter associated with the selected first thermal image data frame is used as the pseudo color parameter of the second thermal image data frame; it is convenient to set the pseudo color of the infrared thermal image which is advantageous for comparing the thermal images of different subjects. parameter. Thereby, the quality of the infrared thermal image processing is ensured, the processing speed is improved, and the workload of manual frame-by-frame pseudo color parameter adjustment is saved.

Other modifications and variations of the disclosed embodiments can be made without departing from the spirit and scope of the invention.

In addition, in the embodiment, the subject thermal image of the electric power industry is used as an example of application, and it is also widely used in various industries of infrared detection. In addition, the processing and control functions of some or all of the components of the embodiments of the present invention may also be implemented in a dedicated circuit or a general purpose processor or a programmable FPGA.

The above description is only the specific embodiment of the invention, and the various embodiments are not intended to limit the scope of the invention, and other modifications and changes may be made to the embodiments without departing from the scope of the invention. The essence and scope of the invention.

Claims

Pseudo color control device, including,

An acquisition unit, configured to acquire a thermal image data frame;

a first selection unit, configured to select a first thermal image data frame;

a second selection unit, configured to select a second thermal image data frame;

The pseudo color setting unit is configured to use the pseudo color parameter associated with the selected first thermal image data frame as a pseudo color parameter of the second thermal image data frame, and the pseudo color parameter includes at least a pseudo color plate range.
A pseudo color control device according to claim 1, comprising

And a pseudo color portion for processing the second thermal image data frame according to the pseudo color parameter to obtain an infrared thermal image.
A pseudo color control device according to claim 1, wherein:

The pseudo color setting unit is configured to respond to a user operation, and use the pseudo color parameter of the selected first thermal image data frame as a pseudo color parameter of the second thermal image data frame;

And a pseudo color portion for processing the second thermal image data frame according to the pseudo color parameter to obtain an infrared thermal image.
The pseudo color control device according to claim 1, further comprising a display control unit for displaying.
The pseudo color control apparatus according to claim 1, wherein said second selection unit is configured to select a second thermal image data frame based on information associated with the first thermal image data frame.
The pseudo color control device according to claim 5, wherein the second selection unit is configured to select the second object according to the object information and/or the shooting parameter information associated with the first thermal image data frame. Thermal image data frame.
The pseudo color control device according to any one of claims 5-6, further comprising: a configuration unit configured to configure information related to the pseudo color setting based on the information associated with the first thermal image data frame; The second selection unit is configured to select the second thermal image data frame according to the configured information.
A pseudo color control device according to claim 1, comprising

The recording unit is configured to record the pseudo color parameter in association with the second thermal image data frame selected by the second selection unit.
The pseudo color control device according to claim 1, wherein the first selection unit is configured to select a thermal image data frame of a frame before the current frame as the first thermal image data frame; and the second selection unit is configured to: The current frame is selected as the second thermal image data frame.
Pseudo-color control methods, including,

An obtaining step of acquiring a thermal image data frame;

a first selecting step of selecting a first thermal image data frame;

a second selecting step of selecting a second thermal image data frame;

And a pseudo color setting step, configured to use the pseudo color parameter associated with the selected first thermal image data frame as a pseudo color parameter of the second thermal image data frame.
A pseudo color control method according to claim 10, comprising

The pseudo color step is configured to process the second thermal image data frame according to the pseudo color parameter to obtain an infrared thermal image.