CN109330615B - Expansion type skeleton photographic apparatus - Google Patents
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Abstract
The invention relates to an extended skeleton camera, comprising: the radiography component comprises an enhanced screen, a CCD sensing device, an image acquisition card and a field display screen, wherein the enhanced screen is arranged above the patient to be detected and is used for receiving a ray signal penetrating through the patient to be detected; in the radiography component, a CCD sensing device is connected with an enhanced screen and used for converting a ray signal enhanced by the enhanced screen into a radiography image signal; in the contrast part, an image acquisition card is respectively connected with a CCD sensing device and a field display screen and is used for acquiring contrast image signals and sending the acquired contrast image signals to the field display screen; and the validity distinguishing equipment is connected with the pixel point identifying equipment and is used for receiving a plurality of skeleton pixel points in the subsequent processing image and sending a signal valid command when the number of the plurality of skeleton pixel points exceeds the limit. By means of the invention, misuse of low quality photographic images is avoided.
Description
Technical Field
The invention relates to the field of skeleton photographers, in particular to an extended skeleton photographer.
Background
The bone camera inputs the received digital signals with human body information into a computer for analysis to obtain the result of the bone density according to different absorption degrees of bones and tissues with different densities to X-rays. This type of apparatus has an X-ray source, a detector, an information analysis and display system, and possibly a patient support.
Disclosure of Invention
In order to solve the technical problem that the effectiveness of the shadow signal of the existing skeleton shadow machine is lack of a judging mechanism, the invention provides an extended skeleton shadow machine, which adopts a wireless communication mode based on a GPRS communication link to obtain a latest standard test chart, and executes the analysis of the linear distortion degree of the image after the linear distortion processing based on the standard test chart so as to determine whether the linear distortion processing needs to be supplemented or not; the key point is that the number of bone pixel points is counted to determine the validity of the corresponding contrast image signal.
According to an aspect of the present invention, there is provided an extended bone camera, the camera including:
the radiography component comprises an enhanced screen, a CCD sensing device, an image acquisition card and a field display screen, wherein the enhanced screen is arranged above a patient to be detected and is used for receiving a ray signal penetrating through the patient to be detected; in the radiography component, the CCD sensing equipment is connected with the enhanced screen and is used for converting the ray signal enhanced by the enhanced screen into a radiography image signal; in the radiography component, the image acquisition card is respectively connected with the CCD sensing equipment and the field display screen and is used for acquiring the radiography image signal and sending the acquired radiography image signal to the field display screen; the color level adjusting device is connected with the CCD sensing device and used for receiving the contrast image signal and performing multiple color level adjustment based on a signal-to-noise ratio on the contrast image signal to obtain a corresponding multiple adjustment image, wherein the lower the signal-to-noise ratio of the contrast image signal is, the more the number of the performed color level adjustment is; the linear distortion processing device is connected with the color level adjusting device and is used for receiving the multiple times of adjusting images and executing linear distortion processing on the multiple times of adjusting images so as to obtain and output corresponding linear processing images; a data selection device connected with the linear distortion processing device and used for receiving the linear processing image, performing image block acquisition based on a nine-grid pattern on the linear processing image to obtain nine image blocks with the same size, performing arithmetic mean calculation on nine linear distortion degrees of the nine image blocks in the linear processing image to obtain the linear distortion degree of the linear processing image, further performing image block acquisition based on the nine-grid pattern on a standard test pattern to obtain nine image blocks with the same size, and performing arithmetic mean calculation on the nine linear distortion degrees of the nine image blocks in the standard test pattern to obtain the linear distortion degree of the test image; in the data selection apparatus, when the linear distortion degree of the linear processing image exceeds the linear distortion degree of the test image, a parameter unreliable command is issued, and when the linear distortion degree of the linear processing image does not exceed the linear distortion degree of the test image, a parameter reliable command is issued; the subsequent processing device is connected with the data selection device and used for executing linear distortion processing on the linear processing image again when the parameter unreliable command is received so as to obtain a subsequent processing image, and outputting the linear processing image as the subsequent processing image when the parameter reliable command is received; the pixel point identification equipment is connected with the subsequent processing equipment and used for receiving the subsequent processing image and executing the following actions aiming at each pixel point in the subsequent processing image: taking pixel points with the brightness values between a preset bone upper limit brightness threshold value and a preset bone lower limit brightness threshold value as bone pixel points; and the validity identification device is connected with the pixel point identification device and used for receiving a plurality of skeleton pixel points in the subsequent processing image and sending a signal validity command when the number of the skeleton pixel points exceeds the limit.
More specifically, in the extended bone camera: the validity identification device is further configured to issue a signal invalidation command when the number of the plurality of bone pixels is not exceeded.
More specifically, in the extended skeleton camera, the method further includes:
and the GPRS communication equipment is connected with the data selection equipment and is used for wirelessly obtaining the standard test chart through a GPRS communication link and sending the standard test chart to the data selection equipment.
More specifically, in the extended bone camera, further comprising:
and the wavelet basis selection device is connected with the subsequent processing device and used for receiving the subsequent processing image, judging the average depth value of the target in the subsequent processing image and selecting the wavelet basis function for executing wavelet filtering based on the average depth value.
More specifically, in the extended skeleton camera, the method further includes:
and the shape customizing device is connected with the wavelet base selection device and used for determining a median filtering window shape for performing median filtering based on the average depth value.
More specifically, in the extended skeleton camera, the method further includes:
and the pixel matching device is connected with the wavelet base selection device and is used for judging the correlation degree grade between every two pixels in the subsequent processing image.
More specifically, in the extended bone camera, further comprising:
and the self-adaptive processing equipment is respectively connected with the pixel point identification equipment, the wavelet base selection equipment, the shape customization equipment and the pixel matching equipment, each pixel in the subsequent processing image is taken as a target pixel, a median filtering window taking the target pixel as the center is determined based on the shape of the median filtering window, the mean value of pixel values of all pixels, of which the correlation degree grade with the target pixel is greater than or equal to a preset grade threshold value, in the median filtering window is taken as the filtered pixel value of the target pixel, and the primary processing equipment is obtained based on the filtered pixel values of all the target pixels.
More specifically, in the extended skeleton camera: the adaptive processing device is also used for executing corresponding wavelet filtering processing on the primary processing device based on the determined wavelet basis function to obtain an adaptive processing image; and the self-adaptive processing equipment is also used for replacing the subsequent processed image with the self-adaptive processed image and sending the self-adaptive processed image to the pixel point identification equipment.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view showing a remote control apparatus of an extended bone imaging machine according to an embodiment of the present invention.
Detailed Description
An embodiment of the extended skeleton camera of the present invention will be described in detail below with reference to the accompanying drawings.
The skeleton photographic camera is a nuclear medicine image examination of a systemic skeleton, and is different from an X-ray image examination of a local skeleton in that a radioactive drug (bone imaging agent) is injected before the examination, the radioactive drug (bone imaging agent) is fully absorbed by the skeleton, a radioactive imaging instrument (such as a gamma camera and an ECT) is used for detecting the radioactive distribution condition of the systemic skeleton after 2-3 hours, if the absorption of the radioactivity by the skeleton at a certain position is abnormally increased or reduced, the phenomenon of abnormal concentration or sparse concentration of the radioactivity occurs, and the abnormal absorption of the radioactivity of the bone in the bone scanning is reflected by abnormal bone metabolism. Therefore, the bone scan is earlier than the focus found by X-ray examination, which can be as early as 3-6 months.
Bone scanning can detect bone metastasis tumor in early stage, so for the patient with tumor of unknown nature, the existence of bone metastasis tumor is found, which means that the tumor is malignant, namely the tumor has metastasized to the bone. The clinical staging of cancer, i.e., the determination of early or late stage, is helpful for patients who have already been diagnosed with cancer, so that doctors can decide which treatment method to use, i.e., local surgery, radiotherapy or general chemotherapy, and whether the local surgery needs to be thoroughly eradicated. The treated cancer patients can observe the existence of bone metastasis and the change of the bone metastasis degree by regularly repeating bone scanning (every interval of 3 months to 1 year) so as to monitor the curative effect of treatment and the existence of tumor recurrence. Bone scanning can judge whether pain is caused by arthritis or paraarticular bone road lesion, whether the pain is osteoarthropathy or visceral and neuropathic pain, diagnose various metabolic bone and joint lesions, diagnose osteomyelitis at early stage in limb soft tissue inflammation, find slight fractures of special parts such as metatarsal bones, ribs and the like, observe blood supply and survival conditions of transplanted bones, and evaluate the treatment effect of various benign and malignant osteoarthropathy. Therefore, bone scanning is a routine examination item in cancer patients abroad and is also the most important examination item in nuclear medicine in large comprehensive hospitals in China.
In order to overcome the defects, the invention builds the extended skeleton photographic machine, and can effectively solve the corresponding technical problem.
Fig. 1 is a schematic structural diagram illustrating a remote control apparatus of an extended skeleton camera according to an embodiment of the present invention.
An extended skeleton camera according to an embodiment of the present invention includes:
the radiography component comprises an enhanced screen, a CCD sensing device, an image acquisition card and a field display screen, wherein the enhanced screen is arranged above a patient to be detected and is used for receiving a ray signal penetrating through the patient to be detected;
in the radiography component, the CCD sensing equipment is connected with the enhanced screen and is used for converting the ray signal enhanced by the enhanced screen into a radiography image signal;
in the radiography component, the image acquisition card is respectively connected with the CCD sensing equipment and the field display screen and is used for acquiring the radiography image signal and sending the acquired radiography image signal to the field display screen;
the color level adjusting device is connected with the CCD sensing device and used for receiving the contrast image signal and performing multiple color level adjustment based on a signal-to-noise ratio on the contrast image signal to obtain a corresponding multiple adjustment image, wherein the lower the signal-to-noise ratio of the contrast image signal is, the more the number of the performed color level adjustment is;
the linear distortion processing device is connected with the color level adjusting device and is used for receiving the multiple times of adjusting images and executing linear distortion processing on the multiple times of adjusting images so as to obtain and output corresponding linear processing images;
a data selection device connected with the linear distortion processing device and used for receiving the linear processing image, performing image block acquisition based on a nine-grid pattern on the linear processing image to obtain nine image blocks with the same size, performing arithmetic mean calculation on nine linear distortion degrees of the nine image blocks in the linear processing image to obtain the linear distortion degree of the linear processing image, further performing image block acquisition based on the nine-grid pattern on a standard test pattern to obtain nine image blocks with the same size, and performing arithmetic mean calculation on the nine linear distortion degrees of the nine image blocks in the standard test pattern to obtain the linear distortion degree of the test image;
in the data selection apparatus, issuing a parameter unreliable command when the linear distortion degree of the linearly processed image exceeds the linear distortion degree of the test image, and issuing a parameter reliable command when the linear distortion degree of the linearly processed image does not exceed the linear distortion degree of the test image;
the subsequent processing device is connected with the data selection device, and is used for performing linear distortion processing on the linear processing image again to obtain a subsequent processing image after receiving the parameter unreliable command, and is also used for outputting the linear processing image as the subsequent processing image after receiving the parameter reliable command;
the pixel point identification device is connected with the subsequent processing device and used for receiving the subsequent processing image and executing the following actions aiming at each pixel point in the subsequent processing image: taking pixel points with the brightness values between a preset bone upper limit brightness threshold value and a preset bone lower limit brightness threshold value as bone pixel points;
and the validity identification device is connected with the pixel point identification device and used for receiving a plurality of skeleton pixel points in the subsequent processing image and sending a signal validity command when the number of the skeleton pixel points exceeds the limit.
Next, a specific configuration of the extended skeleton camera of the present invention will be further described.
In the extended skeleton camera: the validity identification device is further used for sending out a signal invalidation command when the number of the plurality of bone pixel points is not over limit.
In the extended bone camera, further comprising:
and the GPRS communication equipment is connected with the data selection equipment and is used for wirelessly obtaining the standard test chart through a GPRS communication link and sending the standard test chart to the data selection equipment.
In the extended skeleton camera, the method further comprises:
and the wavelet basis selection device is connected with the subsequent processing device and used for receiving the subsequent processing image, judging the average depth value of the target in the subsequent processing image and selecting the wavelet basis function for executing wavelet filtering based on the average depth value.
In the extended skeleton camera, the method further comprises:
and the shape customizing device is connected with the wavelet base selecting device and used for determining a median filtering window shape for performing median filtering based on the average depth value.
In the extended skeleton camera, the method further comprises:
and the pixel matching equipment is connected with the wavelet base selection equipment and is used for judging the correlation degree grade between every two pixels in the subsequent processing image.
In the extended skeleton camera, the method further comprises:
and the self-adaptive processing equipment is respectively connected with the pixel point identification equipment, the wavelet base selection equipment, the shape customization equipment and the pixel matching equipment, each pixel in the subsequent processing image is taken as a target pixel, a median filtering window taking the target pixel as the center is determined based on the shape of the median filtering window, the mean value of pixel values of all pixels, of which the correlation degree grade with the target pixel is greater than or equal to a preset grade threshold value, in the median filtering window is taken as the filtered pixel value of the target pixel, and the primary processing equipment is obtained based on the filtered pixel values of all the target pixels.
In the extended skeleton camera: the adaptive processing device is also used for executing corresponding wavelet filtering processing on the primary processing device based on the determined wavelet basis function to obtain an adaptive processing image;
and the self-adaptive processing equipment is also used for replacing the subsequent processed image with the self-adaptive processed image and sending the self-adaptive processed image to the pixel point identification equipment.
In addition, General Packet Radio Service (generic Packet Radio Service) is a mobile data Service available to GSM mobile phone users. GPRS is said to be a continuation of GSM. GPRS is different from the conventional method of continuous channel transmission in that it is transmitted in Packet (Packet) mode, so the cost of the user is calculated in units of the data to be transmitted, rather than using the entire channel, and is theoretically cheaper. The transmission rate of GPRS can be increased to 56 or even 114 Kbps.
GPRS is often described as "2.5G", meaning that the technology is located between second generation (2G) and third generation (3G) mobile communication technologies. He provides moderate data transfer by utilizing unused TDMA channels in the GSM network. GPRS breaks through the thinking that GSM networks can only provide circuit switching, and packet switching is implemented only by adding corresponding functional entities and partially modifying the existing base station system, which is relatively inexpensive in investment, but the obtained user data rate is considerable. Furthermore, connection and transmission are facilitated since the intermediate switches required by current wireless applications are no longer required. Thus, the user can not only surf the internet online and participate in interactive transmission of video conference, but also the user on the same video network (VRN) can be connected with the network continuously without dial-up networking.
GPRS packet-switched communication in the packet-switched communication mode, data is divided into packets of a certain length, each packet being preceded by a packet header (where the address tag indicates where the packet is destined). The channel is not required to be allocated in advance before the data is transmitted, and the connection is established. Instead, upon the arrival of each packet, an available channel resource is temporarily sought to transmit the datagram based on information in the data header (e.g., destination address). In this transmission method, there is no fixed occupation relationship between the sending and receiving sides of data and the channel, and the channel resources can be regarded as being shared by all users. Since data services exhibit a bursty service characteristic in most cases and the demand for channel bandwidth varies greatly, packet-based data transmission can make better use of channel resources. For example, a user browsing the WWW is most of the time in the browsing state, while the time actually used for data transfer is only a small percentage. In this case, if the channel is fixedly occupied, a large amount of resources will be wasted.
By adopting the extended skeleton camera, aiming at the technical problem that the validity of the camera signals of the skeleton camera in the prior art is lack of a judging mechanism, the latest standard test chart is obtained by adopting a wireless communication mode based on a GPRS communication link, and the analysis of the linear distortion degree of the image after the linear distortion treatment is executed based on the standard test chart so as to determine whether the linear distortion treatment needs to be supplemented or not; particularly, the method is characterized in that the number of skeleton pixel points is counted to determine the effectiveness of corresponding contrast image signals; thereby solving the technical problem.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (8)
1. An extended bone camera, the camera comprising:
the radiography component comprises an enhanced screen, a CCD sensing device, an image acquisition card and a field display screen, wherein the enhanced screen is arranged above a patient to be detected and is used for receiving a ray signal penetrating through the patient to be detected;
in the radiography component, the CCD sensing equipment is connected with the enhanced screen and is used for converting the ray signal enhanced by the enhanced screen into a radiography image signal;
in the radiography component, the image acquisition card is respectively connected with the CCD sensing equipment and the field display screen and is used for acquiring the radiography image signal and sending the acquired radiography image signal to the field display screen;
the color level adjusting device is connected with the CCD sensing device and used for receiving the contrast image signal and performing multiple color level adjustment based on a signal-to-noise ratio on the contrast image signal to obtain a corresponding multiple adjustment image, wherein the lower the signal-to-noise ratio of the contrast image signal is, the more the number of the performed color level adjustment is;
the linear distortion processing device is connected with the color level adjusting device and is used for receiving the multiple times of adjusting images and executing linear distortion processing on the multiple times of adjusting images so as to obtain and output corresponding linear processing images;
a data selection device connected to the linear distortion processing device, for receiving the linear processing image, performing image block acquisition based on a nine-grid pattern on the linear processing image to obtain nine image blocks of the same size, performing arithmetic mean calculation on nine linear distortion degrees of the nine image blocks in the linear processing image to obtain linear distortion degrees of the linear processing image, and further for performing image block acquisition based on a nine-grid pattern on a standard test pattern to obtain nine image blocks of the same size, performing arithmetic mean calculation on nine linear distortion degrees of the nine image blocks in the standard test pattern to obtain linear distortion degrees of the test image;
in the data selection apparatus, issuing a parameter unreliable command when the linear distortion degree of the linearly processed image exceeds the linear distortion degree of the test image, and issuing a parameter reliable command when the linear distortion degree of the linearly processed image does not exceed the linear distortion degree of the test image;
the subsequent processing device is connected with the data selection device, and is used for performing linear distortion processing on the linear processing image again to obtain a subsequent processing image after receiving the parameter unreliable command, and is also used for outputting the linear processing image as the subsequent processing image after receiving the parameter reliable command;
the pixel point identification device is connected with the subsequent processing device and used for receiving the subsequent processing image and executing the following actions aiming at each pixel point in the subsequent processing image: taking pixel points with the brightness values between a preset bone upper-limit brightness threshold value and a preset bone lower-limit brightness threshold value as bone pixel points;
and the effectiveness distinguishing equipment is connected with the pixel point identification equipment and is used for receiving a plurality of skeleton pixel points in the subsequent processing image and sending a signal effectiveness command when the number of the skeleton pixel points exceeds the limit.
2. The extended skeleton camera of claim 1, wherein:
the validity identification device is further configured to issue a signal invalidation command when the number of the plurality of bone pixels is not exceeded.
3. The extended bone camera of claim 2, wherein the camera further comprises:
and the GPRS communication equipment is connected with the data selection equipment and is used for wirelessly obtaining the standard test chart through a GPRS communication link and sending the standard test chart to the data selection equipment.
4. The extended bone camera of claim 3, wherein the camera further comprises:
and the wavelet basis selection device is connected with the subsequent processing device and used for receiving the subsequent processing image, judging the average depth value of the target in the subsequent processing image and selecting the wavelet basis function for executing wavelet filtering based on the average depth value.
5. The extended bone camera of claim 4, wherein the camera further comprises:
and the shape customizing device is connected with the wavelet base selecting device and used for determining a median filtering window shape for performing median filtering based on the average depth value.
6. The extended bone camera of claim 5, wherein the camera further comprises:
and the pixel matching device is connected with the wavelet base selection device and is used for judging the correlation degree grade between every two pixels in the subsequent processing image.
7. The extended bone camera of claim 6, wherein the camera further comprises:
and the self-adaptive processing equipment is respectively connected with the pixel point identification equipment, the wavelet base selection equipment, the shape customization equipment and the pixel matching equipment, each pixel in the subsequent processing image is taken as a target pixel, a median filtering window taking the target pixel as the center is determined based on the shape of the median filtering window, the mean value of pixel values of all pixels, of which the correlation degree grade with the target pixel is greater than or equal to a preset grade threshold value, in the median filtering window is taken as the filtered pixel value of the target pixel, and the primary processing equipment is obtained based on the filtered pixel values of all the target pixels.
8. The extended skeleton camera of claim 7, wherein:
the adaptive processing device is also used for executing corresponding wavelet filtering processing on the primary processing device based on the determined wavelet basis function to obtain an adaptive processing image;
and the self-adaptive processing equipment is also used for replacing the subsequent processed image with the self-adaptive processed image and sending the self-adaptive processed image to the pixel point identification equipment.
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