CN117097906B - Method and system for efficiently utilizing regional medical resources - Google Patents
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Abstract
The invention relates to the technical field of video communication, in particular to a method and a system for efficiently utilizing regional medical resources, comprising the following steps: acquiring an original video frame data sequence; obtaining a difference video frame data sequence according to the difference between the original video frames; carrying out variable direction run statistics on each difference video frame in the difference video frame data sequence, acquiring a plurality of overlapped bit layers based on a first run, carrying out variable direction run statistics in the overlapped bit layers, and improving the run length by combining bit layer overlapping to obtain a final run coding result; and transmitting the medical-linkage collaboration platform video according to the final run coding result to finish the efficient utilization of medical resources. The invention effectively increases the length of the run statistics, improves the coding compression efficiency and improves the high-efficiency utilization rate of regional medical resources.
Description
Technical Field
The invention relates to the technical field of video communication, in particular to a method and a system for efficiently utilizing regional medical resources.
Background
Medical resources are one of important demands in daily life of people all the time, at present, the state that different areas are unbalanced exists in the national medical resources generally, the medical resources in the economic lagging area are relatively lagged, and especially the basic medical resources are in shortage. However, with the development of the internet technology, a basic medical linkage collaboration platform is developed gradually, and the basic level of medical resource shortage is supported by high-quality medical resources mainly through auxiliary modes such as online payment, remote consultation and the like. In order to improve the transmission efficiency, the data sequence compression is needed to be performed on the video to be transmitted first, because the medical-linked collaboration platform involves a large amount of video which needs to be transmitted remotely.
The video to be transmitted is composed of one frame and one frame, and for the processing of the video to be transmitted, adjacent video frames are subjected to adjacent video frame difference according to the similarity of the adjacent video frames, and the difference result is recorded as a difference video frame, so that one frame of difference video frame can be obtained, and then the effects of reducing the data sequence quantity and improving the transmission efficiency are realized through the difference video frame. The element value of each element in the obtained difference video frame is generally smaller, the adjacent elements with smaller differences are represented as a large number of bit values with consistent values in high-order layers in the bit layers, the same element value has a large number of bit values with consistent values in different bit layers, at the moment, run-length coding can be carried out in different bit layers, and the bit values with consistent values are combined and compressed. Whereas the difference video frame has a large number of identical bit values in all three directions in the bit hierarchy. In the process of counting in one direction, each counted last bit value has the same bit value in different directions, and the number of the same bit values in different directions is different, so that the compression efficiency of the run length is greatly reduced by conventionally limiting the run length by fixing the run direction, thereby greatly limiting the high-efficiency utilization rate of the regional medical resources.
Disclosure of Invention
The invention provides a method and a system for efficiently utilizing regional medical resources, which are used for solving the existing problems.
The invention relates to a method and a system for efficiently utilizing regional medical resources, which adopts the following technical scheme:
one embodiment of the present invention provides a method for efficient utilization of regional medical resources, the method comprising the steps of:
acquiring an original video frame data sequence of a medical linkage collaboration platform, wherein the original video frame data sequence comprises a plurality of original video frames;
obtaining a difference video frame data sequence according to the difference between original video frames, wherein the difference video frame data sequence comprises a plurality of difference video frames;
carrying out bit layering on each frame of difference video frame in the difference video frame data sequence, and setting a running statistics direction according to the bit layering to obtain a plurality of initial running statistics directions and corresponding initial running directions in each frame of difference video frame; acquiring a plurality of first runlengths in each difference video frame according to the initial runlength counting direction, the corresponding initial runlengths and the bit layering; selecting a plurality of initial video frames and a plurality of reference video frames of each initial video frame according to the difference video frames; obtaining a plurality of initial last bit values according to the initial video frame and the first run; acquiring the reference overlapping quantity of each reference video frame according to a plurality of reference video frames of the initial video frame and the initial last bit value; acquiring overlapping bit layering of an initial video frame according to the reference overlapping quantity, acquiring overlapping bit layering of all difference video frames, respectively placing all the difference video frames into each overlapping bit layering, and carrying out first run statistics on each overlapping bit layering to obtain a plurality of first runs Cheng Ji which are final runs; all final runlengths are formed into a final runlength coding result;
And transmitting the video of the medical-linkage collaboration platform according to the final run coding result.
Preferably, the obtaining the difference video frame data sequence according to the difference between the original video frames includes:
making differences on all the adjacent video frames in the original video frame data sequence, marking the video frame result of subtracting the original video frame of the next frame from the original video frame of the previous frame as a difference video frame, marking each frame of difference video frame as a difference video frame corresponding to the original video frame of the next frame, and forming a difference video frame data sequence by all the difference video frames; the difference video frame corresponding to the first frame original video frame is the first frame original video frame itself.
Preferably, the obtaining a plurality of initial run statistical directions and corresponding initial runs in each difference video frame according to the bit layered setting run statistical directions includes:
acquiring a running statistical direction of each frame of difference video frame to obtain three running statistical directions;
for any frame of difference video frame, starting from a bit value at the upper left corner in the highest level layering, performing run statistics in three run statistics directions, recording the largest run statistics direction of the run length as an initial run statistics direction of the bit value, recording the run length of the bit value in the initial run statistics direction as the initial run length of the bit value, and recording the bit values of other same values traversed by the bit value in the initial run statistics direction as the initial run of the bit value; and carrying out run statistics on the bit values in each bit hierarchy to obtain the run lengths in different initial run statistical directions and corresponding initial runs.
Preferably, the obtaining the running statistics direction of each frame of the difference video frame to obtain three running statistics directions includes:
the right direction of the row and the downward direction of the column in the run statistics row-column direction are respectively marked as X and Y directions, and the direction from the highest-order layering to the lowest-order layering in the bit layering is marked as Z direction; the X, Y, Z direction is collectively referred to as the run-length statistic direction.
Preferably, the obtaining a plurality of first runs in each difference video frame according to the initial run statistics direction, the corresponding initial run and the bit layering includes:
for any frame of difference video frame, starting from a bit value at the upper left corner in the highest bit layering, acquiring an initial run and an initial run length of the bit value, acquiring the run lengths of the other two run statistical directions except for the initial run statistical direction corresponding to the initial run for the last bit value in the initial run, taking the run statistical direction corresponding to the largest one of the two run lengths as the run extending direction of the initial run, and extending the initial run Cheng Yanyou; after the extension is completed, carrying out run length statistics on the last bit value of the initial run of extension in the other two run statistical directions except the run extension direction, and continuously selecting the run statistical direction corresponding to the largest one of the two run lengths to extend;
If the maximum run length is less than or equal to the preset extension threshold value, the extension is not performed any more; completing extension of an initial run of a bit value of the upper left corner in the highest bit hierarchy, and marking an obtained result as a first run of the bit value; and extending each initial run to obtain a first run.
Preferably, the obtaining a plurality of initial last bit values according to the initial video frame and the first run includes:
recording all bit hierarchies of the initial video frame as initial bit hierarchies; and fixing the number of initial bit layering layers, carrying out statistics of a first run, screening out last bit values in the first run in the lowest bit layering in the initial bit layering, and marking a plurality of last bit values obtained by screening as initial last bit values.
Preferably, the obtaining the reference overlapping number of each reference video frame according to the plurality of reference video frames and the initial last bit value of the initial video frame includes:
and recording the v-th frame difference video frame of the initial video frame as a reference video frame, counting the number of bit values with the same value at the same position in all bit layers of the v-th frame difference video frame of any initial last bit value, recording the number of initial overlapping of the initial last bit value in the v-th frame difference video frame, acquiring the number of initial overlapping of all initial last bit values in the v-th frame difference video frame, and recording the sum of all initial overlapping numbers as the reference overlapping number of the reference video frame.
Preferably, the selecting a plurality of initial video frames and a plurality of reference video frames of each initial video frame according to the difference video frame includes:
and taking the M+1st frame difference video frame as an initial video frame, and recording the difference video frames of each adjacent M frames before and after the initial video frame as reference video frames of the initial video frame.
Preferably, the acquiring the overlapping bit hierarchy of the initial video frame according to the reference overlapping amount includes:
marking the reference video frame with the largest reference overlapping number as an inserted video frame of the initial video frame, and sequentially inserting all bit layers of the inserted video frame below the lowest bit layer in the initial bit layers according to the sequence from the highest bit layer to the lowest bit layer;
and recording the inserted bit layers as overlapped bit layers of the initial video frame, carrying out statistics of a first run again on the overlapped bit layers of the initial video frame, obtaining last bit values of a plurality of first runs of the lowest bit layers in the overlapped bit layers, continuing to obtain the reference overlapped number of each difference video frame according to the difference video frames of each adjacent M frames before and after the inserted video frame, continuing to insert the difference video frame with the largest reference overlapped number into the overlapped bit layers, and stopping updating the overlapped bit layers if the largest reference overlapped number is smaller than or equal to a splicing stop threshold value, so as to finish overlapped bit layer acquisition of the initial video frame.
Another embodiment of the present invention provides a system for efficient utilization of regional medical resources, the system comprising:
the system comprises an original video frame data sequence acquisition module, a medical linkage collaboration platform acquisition module and a medical linkage collaboration platform acquisition module, wherein the original video frame data sequence acquisition module is used for acquiring an original video frame data sequence of the medical linkage collaboration platform, and the original video frame data sequence comprises a plurality of original video frames;
the difference video frame data sequence acquisition module is used for acquiring a difference video frame data sequence according to the difference between original video frames, wherein the difference video frame data sequence comprises a plurality of difference video frames;
the final run code acquisition module is used for carrying out bit layering on each frame of difference video frame in the difference video frame data sequence, and setting a run statistical direction according to the bit layering to obtain a plurality of initial run statistical directions and corresponding initial runs in each difference video frame; acquiring a plurality of first runlengths in each difference video frame according to the initial runlength counting direction, the corresponding initial runlengths and the bit layering; selecting a plurality of initial video frames and a plurality of reference video frames of each initial video frame according to the difference video frames; obtaining a plurality of initial last bit values according to the initial video frame and the first run; acquiring the reference overlapping quantity of each reference video frame according to a plurality of reference video frames of the initial video frame and the initial last bit value; acquiring overlapping bit layering of an initial video frame according to the reference overlapping quantity, acquiring overlapping bit layering of all difference video frames, respectively placing all the difference video frames into each overlapping bit layering, and carrying out first run statistics on each overlapping bit layering to obtain a plurality of first runs Cheng Ji which are final runs; all final runlengths are formed into a final runlength coding result;
And the platform video transmission module is used for transmitting the medical-linkage collaboration platform video according to the final run coding result.
The technical scheme of the invention has the beneficial effects that: based on the characteristic that similar pixel values of pixel points at the same position in adjacent video frames are consistent in a large number of bit values at the same position in bit layering of a difference video frame, bit layering splicing is carried out, and the influence of bit layering on run statistics is avoided; the bit layering splicing firstly extends the number of the same bit values in the Z direction, so that the run length of the last bit in the lowest layering Z direction is improved; meanwhile, the limitation of the bit layering quantity on the Z-direction statistics is reduced, so that the possibility that other running statistics extend to the Z-direction is increased, the length of the running statistics is effectively improved, the coding compression efficiency is improved, and the high-efficiency utilization rate of regional medical resources is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of a method for efficient utilization of regional medical resources in accordance with the present invention;
fig. 2 is a block diagram of a system for efficient utilization of regional medical resources in accordance with the present invention.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention to achieve the preset purposes, the following detailed description refers to the specific implementation, structure, characteristics and effects of a method and system for efficiently utilizing regional medical resources according to the present invention in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" means that the embodiments are not necessarily the same. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The following specifically describes a specific scheme of a method and a system for efficiently utilizing regional medical resources provided by the invention with reference to the accompanying drawings.
Referring to fig. 1, a flowchart of steps of a method for efficiently utilizing regional medical resources according to an embodiment of the present invention is shown, the method includes the following steps:
Step S001: and acquiring an original video frame data sequence of the medical-linkage collaboration platform.
It should be noted that medical resources are one of the important demands in daily life all the time, and at present, the state of imbalance in different areas exists in the national medical resources generally, so that the medical resources in the economic lagging area are relatively lagged, and especially the medical resources of the basic level are in shortage. However, with the development of the internet technology, a basic medical linkage collaboration platform is developed gradually, and the basic level of medical resource shortage is supported by high-quality medical resources mainly through auxiliary modes such as online payment, remote consultation and the like. In order to improve the transmission efficiency, the data sequence compression is needed to be performed on the video to be transmitted first, because the medical-linked collaboration platform involves a large amount of video which needs to be transmitted remotely.
The video to be transmitted is composed of one frame and one frame, and for the processing of the video to be transmitted, adjacent video frames are subjected to adjacent video frame difference according to the similarity of the adjacent video frames, and the difference result is recorded as a difference video frame, so that one frame of difference video frame can be obtained, and then the effects of reducing the data sequence quantity and improving the transmission efficiency are realized through the difference video frame. The element value of each element in the obtained difference video frame is generally smaller, the adjacent elements with smaller differences are represented as a large number of bit values with consistent values in high-order layers in the bit layers, the same element value has a large number of bit values with consistent values in different bit layers, at the moment, run-length coding can be carried out in different bit layers, and the bit values with consistent values are combined and compressed. Whereas the difference video frame has a large number of identical bit values in all three directions in the bit hierarchy. In the process of counting in one direction, each counted last bit value has the same bit value in different directions and the number of the same bit values in different directions is different, so that the compression efficiency of the run length is greatly reduced by conventionally limiting the run length by fixing the run direction.
In order to perform data sequence compression processing on video to be transmitted, an original video frame data sequence needs to be acquired first.
Specifically, the acquisition process is as follows: acquiring a video to be transmitted from a video storage module of the medical-linked collaboration platform, and then reading the video to be transmitted as an original video frame data sequence to be compressed through a video compression module; the frame number of the video to be transmitted adopts 60 frames in the embodiment, each video frame is marked as an original video frame, and all the original video frames form an original video frame data sequence according to time sequence.
Up to this point, an original video frame data sequence consisting of original video frames can be obtained by the above method.
Step S002: and obtaining a difference video frame data sequence according to the difference between the original video frames.
In compressing an original video frame by run-length encoding, the longer the run-length is, the higher the compression efficiency is. The difference video frames have a number of consecutively identical bit values in the bit hierarchy. In this embodiment, the run statistics of the difference video frame in the bit layer with variable direction is performed, and the run length is increased by using the overlapping of the bit layers.
Because a large number of similar elements exist between each frame of original video frames in the original video frame data sequence, a large number of time redundancies exist between each frame of original video frames, and video encryption is mainly aimed at time redundancies, and according to the large number of similar elements between the adjacent original video frames, the adjacent original video frames are represented by utilizing the differences between the original video frames.
Specifically, the specific process of performing the representation of the adjacent original video frames by using the differences between the original video frames is as follows: firstly, making differences on all front and back adjacent original video frames in an original video frame data sequence, marking a video frame result of subtracting an original video frame of a next frame from an original video frame of a previous frame as a difference video frame, marking the frame difference video frame as a difference video frame corresponding to the original video frame of the next frame, wherein element values at the same position are subtracted to obtain absolute values to form the difference video frame; and arranging all the difference video frames according to the sequence of the corresponding original video frames, and marking the obtained sequence as a difference video frame sequence.
In addition, it should be noted that the amount of the data sequence of the obtained difference video frame is far smaller than that of the original video frame, so as to achieve compression of the original video frame. The difference video frame corresponding to the first frame original video frame is the first frame original video frame itself.
So far, the difference video frame data sequence composed of the difference video frames is obtained through the method.
Step S003: and carrying out variable direction run statistics in the overlapped bit layering according to the difference video frame data sequence, and improving the run length by combining bit layering overlapping to obtain a final run coding result.
1. And carrying out variable direction run statistics in the overlapped bit layering according to the difference video frame data sequence, and improving the run length by combining bit layering overlapping.
It should be noted that, in the method in step S002, the original video frame is compressed according to the difference between the adjacent original video frames. Because a large number of similar areas exist in the original video frames adjacent to each other in the original video frame data sequence, the difference of the element values of the elements at the same position in the acquired difference video frames adjacent to each other in front and back is small, and a large number of identical element values exist in the difference video frames of the two. Since similar regions of adjacent original video frames also appear as regional identical element values in corresponding difference video frames, there is information redundancy for each difference video frame in the sequence of difference video frame data.
In the case that a large number of adjacent element points have consistent element values or small absolute values of differences in the difference video frame, in order to express the consistency of similar element points in the expression of data sequences, the embodiment performs bit layering on the difference video frame, at this time, the adjacent element points with small absolute values of differences express a large number of bit values with consistent values in the bit layering, and the bit values in different layering of the same element value have a large number of bit values with consistent values. Based on a large number of numerically consistent bit values in the bit hierarchy, the present embodiment continues compression of the difference video frame data sequence using run-length encoding.
It should be further noted that, since the bit layering of the difference video frame data sequence performs run-length encoding, the number of identical bit values is counted mainly in one direction, so that the run-length direction needs to be determined in the actual run-length encoding process. However, in the bit layering of the difference video frame data sequence, a plurality of bit values with the same value exist in three directions, at this time, in a direction statistics process, each counted last bit value has the same bit value in different directions, and the number of the same bit values in different directions is different, so conventionally, by fixing the run direction, the method of limiting the run length can greatly reduce the compression efficiency of the run coding.
For the current original video frame, a large number of consistent areas exist between the front and rear adjacent original video frames, namely, element values of corresponding positions are equal, so that a large number of element points with element values of 0 exist in the difference video frames subjected to difference between the adjacent frames, and a large number of bit values with value of 0 exist in different layers at the same position in bit layers of the front and rear adjacent difference video frames; and because the element values of the whole difference video frame are smaller, and the local element points of the original video frame have higher similarity, the consistency of the bit values of the element points of the same layer in the corresponding bit hierarchy is higher, and the corresponding consistency of the higher bit hierarchy is higher. In the bit layering of the sequence of difference video frame data, the bit values have more identical bit values in different directions.
Based on the above features, the present embodiment improves the run length by changing the run direction during the run statistics process.
(1) And counting the run length according to the difference video frame to obtain a run coding result.
Specifically, the specific process of acquiring the run length is as follows:
and according to the time sequence of the difference video frames, run-length coding is sequentially carried out in the bit layering. Taking any frame of difference video frame as an example, respectively marking the rightward direction of a row and the downward direction of a column in the run statistics row-column direction as an X direction and a Y direction, and marking the direction from the most significant layer to the least significant layer in the bit layering as a Z direction; uniformly marking X, Y, Z directions as run statistics directions; in the running statistics process, firstly, starting from a bit value at the upper left corner in the highest level layering, performing three running statistics in the running statistics direction, recording the running statistics direction with the largest running length as the initial running statistics direction of the bit value, recording the running length of the bit value in the initial running statistics direction as the initial running length of the bit value, and recording the bit values of other same values traversed by the bit value in the initial running statistics direction as the initial running of the bit value; performing run statistics on bit values in each bit hierarchy according to the method to obtain run lengths in different initial run statistics directions and corresponding initial runs; it should be noted that, the initial run statistical direction corresponding to each bit value is the largest in the continuous distribution number of bit values with the same value in the run statistical direction, and the bit value may be located in the middle part of the initial run corresponding to the initial run statistical direction, rather than the starting point part.
It should be further noted that, for each initial run, the last bit value of the initial run may still have the bit value with the same value in the other two run statistical directions except the initial run statistical direction, so that the initial run may be extended, and the continuous distribution number of the bit values with the same value may be obtained to the greatest extent; meanwhile, in order to avoid the influence on the subsequent compression caused by the too small data size of extension, a preset extension threshold value is introduced to ensure the subsequent compression effect.
Specifically, taking a bit value of the upper left corner in the highest bit hierarchy as an example, acquiring an initial run and an initial run length of the bit value, and then acquiring the run lengths of the other two run statistical directions except for the initial run statistical direction corresponding to the initial run for the last bit value in the initial run, taking the run statistical direction corresponding to the largest one of the two run lengths as the run extending direction of the initial run, and extending the initial run Cheng Yanyou; after the extension is completed, carrying out run length statistics on the last bit value of the initial run of extension in the other two run statistical directions except the run extension direction, and continuously selecting the run statistical direction corresponding to the largest one of the two run lengths to extend; meanwhile, in order to avoid too small extended data volume, a preset extension threshold value K is introduced in the embodiment, if the maximum run length is smaller than or equal to the preset extension threshold value K, extension is not performed any more, and K=8 is adopted for calculation in the embodiment; completing extension of an initial run of a bit value of the upper left corner in the highest bit hierarchy, and marking an obtained result as a first run of the bit value; according to the method, each initial run is extended to obtain a first run, and it should be noted that some initial runs are counted into the first runs of other initial runs, and the initial runs are not extended to obtain the first run.
After the statistics of the runs performed by the above process is completed, the counted runs need to be accurately represented.
Specifically, the run length is expressed asWhich is provided withMiddle->The number of bit values representing the same value in the statistical direction of the t-th run in the i-th first run, namely the run length in the statistical direction of the t-th run in the i-th first run; />Indicating the number of run statistics directions in the i first run.
Further, since an explicit determination is also required in the run-length restoration processIn the statistical run, the run statistical direction corresponding to the run needs to be recorded again. The statistical direction of the t-th run in the i-th first run is marked as +.>Wherein->The value of (2) is X, Y and Z; the run-length encoding result of the i-th first run is: />
Wherein the method comprises the steps ofRepresenting the run-length encoding result of the ith first run; />Representing the statistical direction of the t-th run in the run coding result of the i-th first run,/th run>，/>Representing the number of run statistics directions in the ith first run; />Representing the run length in the statistical direction of the t-th run in the i-th first run.
Thus, the run length coding result of each difference video frame in the difference video frame data sequence can be obtained through the method.
(2) And carrying out bit layering and overlapping according to the difference video frame data sequence to obtain overlapping bit layering.
After run-length encoding is performed by using the run-length statistics in the variable direction in the determined bit hierarchy, a large number of element points with consistent element values between original video frames are represented as bit values with consistent values in different hierarchies in the bit hierarchy of the difference video frame, and a large number of bit values with consistent values exist in different bit hierarchies for element points in the same position of different video frames. At this time, since the run statistics in the bit layering of the fixed number of layering is affected by the layering number, in order to increase the run length, the present embodiment performs bit layering overlapping; the bit layering is 8 layers for the gray video frame and each channel is bit layered for the bit layering of the color video frame, so that the number of bit layering is fixed.
The main limitation of the run direction in the bit layering of the difference video frame is to limit the number of bit layering, and at this time, the overlapping of the bit layering needs to be performed in the actual run encoding process.
Specifically, the specific process of overlapping the bit hierarchies is as follows: firstly, taking an M+1st frame difference video frame as an initial video frame according to the time sequence of the difference video frames, wherein M is the adjacent reference quantity, in the embodiment, M=20, namely, the initial video frame needs to be subjected to bit layering overlapping according to each M frame difference video frame which is adjacent to the initial video frame, so that the M+1st frame is taken as the first video frame for carrying out bit layering overlapping; recording all bit hierarchies of the initial video frame as initial bit hierarchies; fixing the number of initial bit layering layers and counting the first run, and screening out last bit values in the first run, namely last bit values of a plurality of first runs in the lowest bit layering in the initial bit layering; since the number of bit layers is fixed, the extension in the Z direction is required according to the last bit value, and the extension can be performed by the adjacent difference video frames.
Further, for the initial video frame, marking a plurality of last bit values obtained by screening as initial last bit values, and for the v-th frame difference video frame of the initial video frame, the value range of v is an integer between 1 and 40, namely 20 adjacent frames before and after the initial video frame; counting the number of bit values with the same position and the same numerical value in all bit layers of any initial last bit value in a v-frame difference video frame, recording the number as the initial overlapping number of the initial last bit value in the v-frame difference video frame, acquiring the initial overlapping number of all initial last bit values in the v-frame difference video frame, and recording the sum of all initial overlapping numbers as the reference overlapping number of the initial video frame in the v-frame difference video frame; marking the difference video frames of each adjacent M frames before and after the initial video frame as reference video frames of the initial video frame, marking the reference video frame with the largest reference overlapping amount as an inserted video frame of the initial video frame, and sequentially inserting all bit layers of the inserted video frame below the lowest bit layer in the initial bit layer according to the sequence from the highest bit layer to the lowest bit layer; the inserted bit layers are marked as overlapped bit layers of the initial video frame, and taking a gray video frame as an example, the overlapped bit layers have 16 bit layers at the moment; counting the overlapped bit layering of the initial video frame again, acquiring the last bit values of a plurality of first runs of the lowest bit layering in the overlapped bit layering according to the method, continuing to acquire the reference overlapped number of each difference video frame according to the difference video frames of each adjacent M frames before and after the inserted video frame, and continuing to insert the difference video frame with the largest reference overlapped number into the overlapped bit layering, wherein in order to avoid invalid splicing caused by too small bit value number of the last bit value and the same value of the reference video frame in the Z direction, the embodiment sets a splicing stop threshold KM, if the maximum reference overlapped number is smaller than or equal to the splicing stop threshold, updating of the overlapped bit layering is stopped, and the embodiment adopts half of the total number of the positions of the original video frame as the value of KM, namely half of the resolution result, for example, the resolution of the original video frame is 100×100, and KM=5000; according to the method, overlapping bit layering is carried out on all the difference video frames, so that all the difference video frames can be respectively placed into each overlapping bit layering; it should be noted that, the difference video frame that has been inserted into a certain overlapped bit hierarchy is no longer used as a reference video frame for other difference video frames.
At this time, run-length encoding is performed on the basis of the bit hierarchical overlap. Wherein the bit-layered overlap first extends the number of identical bit values in the Z-direction, thereby increasing the run length of the last bit in the Z-direction of the lowest layer. Meanwhile, the limitation of the bit layering quantity on the Z-direction statistics is reduced, so that the possibility that other run statistics extend to the Z-direction is increased, the length of the run statistics is effectively improved, and the coding compression efficiency is improved.
2. And layering according to the run-length coding result and the overlapped bits to obtain a final run-length coding result.
Specifically, according to the above steps, firstly, overlapping bit layers of a difference video frame to obtain a plurality of overlapped bit layers after overlapping, and performing first run statistics on each overlapped bit layer to obtain a plurality of first runs Cheng Ji as final runs; the j-th final run-length encoding result is obtained as follows:
wherein the method comprises the steps ofRepresenting the j-th final run-length encoding result; />Representing the z-th run statistical direction in the j-th final run; />Representing the z-th run statistical direction in the j-th final runRun length.
So far, the final run-length coding result of different overlapped bit layering is obtained.
Step S004: and transmitting the video of the medical-linkage collaboration platform according to the final run coding result.
Transmitting the final run length coding result, and simultaneously transmitting the sequence value of each difference video frame in the difference video frame data sequence from top to bottom in each overlapped bit hierarchy; for a video receiving end in the medical-linkage collaboration platform, a plurality of overlapped bit layers are obtained in the decompression process according to a final run coding result, a differential video frame data sequence is obtained according to the ordinal value of each differential video frame in the overlapped bit layers, a first differential video frame in the differential video frame data sequence is a first original video frame, and the restoration of each original video frame of the original video frame data sequence is completed according to the first original video frame and each other differential video frame.
Therefore, remote inquiry or online payment video compression related to the medical linkage collaboration process is completed, so that the video transmission efficiency of the medical linkage collaboration platform is improved.
Through the steps, the efficient utilization of regional medical resources is completed.
Referring to fig. 2, a block diagram of a system for efficient utilization of regional medical resources according to an embodiment of the present invention is shown, where the system includes the following modules:
the system comprises an original video frame data sequence acquisition module, a medical linkage collaboration platform acquisition module and a medical linkage collaboration platform acquisition module, wherein the original video frame data sequence acquisition module is used for acquiring an original video frame data sequence of the medical linkage collaboration platform, and the original video frame data sequence comprises a plurality of original video frames;
The difference video frame data sequence acquisition module is used for acquiring a difference video frame data sequence according to the difference between original video frames, wherein the difference video frame data sequence comprises a plurality of difference video frames;
the final run code acquisition module is used for carrying out bit layering on each frame of difference video frame in the difference video frame data sequence, and setting a run statistical direction according to the bit layering to obtain a plurality of initial run statistical directions and corresponding initial runs in each difference video frame; acquiring a plurality of first runlengths in each difference video frame according to the initial runlength counting direction, the corresponding initial runlengths and the bit layering; selecting a plurality of initial video frames and a plurality of reference video frames of each initial video frame according to the difference video frames; obtaining a plurality of initial last bit values according to the initial video frame and the first run; acquiring the reference overlapping quantity of each reference video frame according to a plurality of reference video frames of the initial video frame and the initial last bit value; acquiring overlapping bit layering of an initial video frame according to the reference overlapping quantity, acquiring overlapping bit layering of all difference video frames, respectively placing all the difference video frames into each overlapping bit layering, and carrying out first run statistics on each overlapping bit layering to obtain a plurality of first runs Cheng Ji which are final runs; all final runlengths are formed into a final runlength coding result;
And the platform video transmission module is used for transmitting the medical-linkage collaboration platform video according to the final run coding result.
According to the embodiment, based on the characteristic that similar pixel values of pixel points at the same position in adjacent video frames are consistent in a large number of bit values at the same position in bit layering of a difference video frame, bit layering splicing is carried out, and the influence of bit layering numbers on run statistics is avoided; the bit layering splicing firstly extends the number of the same bit values in the Z direction, so that the run length of the last bit in the lowest layering Z direction is improved; meanwhile, the limitation of the bit layering quantity on the Z-direction statistics is reduced, so that the possibility that other running statistics extend to the Z-direction is increased, the length of the running statistics is effectively improved, the coding compression efficiency is improved, and the high-efficiency utilization rate of regional medical resources is improved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the invention, but any modifications, equivalent substitutions, improvements, etc. within the principles of the present invention should be included in the scope of the present invention.
Claims (9)
1. A method for efficient utilization of regional medical resources, the method comprising the steps of: acquiring an original video frame data sequence;
Obtaining a difference video frame data sequence consisting of difference video frames according to the difference between the original video frames; bit layering is carried out on each frame of difference video frames in the difference video frame data sequence, a running statistics direction is set according to the bit layering, a plurality of initial running statistics directions and corresponding initial running directions in each video frame are obtained, and a plurality of first running directions in each video frame are obtained according to the initial running statistics directions and corresponding initial running directions and the bit layering;
selecting an initial video frame and combining a first run to obtain a plurality of initial final bit values, acquiring a reference overlapping number of each reference video frame according to a plurality of reference video frames and the initial final bit values of the initial video frame, acquiring overlapping bit layering of the initial video frame according to the reference overlapping number, acquiring overlapping bit layering of all difference video frames, respectively placing all the difference video frames into each overlapping bit layering, carrying out first run statistics on each overlapping bit layering, and acquiring a plurality of first runs Cheng Ji as final runs, wherein all the final runs form a final run coding result;
transmitting the video of the medical-linkage collaboration platform according to the final run coding result;
The method for obtaining the overlapping bit layering of the initial video frame according to the reference overlapping quantity comprises the following specific steps: marking the reference video frame with the largest reference overlapping number as an inserted video frame of the initial video frame, and sequentially inserting all bit layers of the inserted video frame below the lowest bit layer in the initial bit layers according to the sequence from the highest bit layer to the lowest bit layer; and recording the inserted bit layers as overlapped bit layers of the initial video frame, carrying out statistics of a first run again on the overlapped bit layers of the initial video frame, obtaining last bit values of a plurality of first runs of the lowest bit layers in the overlapped bit layers, continuing to obtain the reference overlapped number of each difference video frame according to the difference video frames of each adjacent M frames before and after the inserted video frame, continuing to insert the difference video frame with the largest reference overlapped number into the overlapped bit layers, and stopping updating the overlapped bit layers if the largest reference overlapped number is smaller than or equal to a splicing stop threshold value, so as to finish overlapped bit layer acquisition of the initial video frame.
2. The method for efficiently utilizing regional medical resources according to claim 1, wherein the differential video frame data sequence consisting of differential video frames is obtained by the following specific method:
Making differences on all the adjacent video frames in the original video frame data sequence, marking the video frame result of subtracting the original video frame of the next frame from the original video frame of the previous frame as a difference video frame, marking each frame of difference video frame as a difference video frame corresponding to the original video frame of the next frame, and forming a difference video frame data sequence by all the difference video frames; the difference video frame corresponding to the first frame original video frame is the first frame original video frame itself.
3. The method for efficiently utilizing regional medical resources according to claim 1, wherein the steps of setting a running statistics direction according to bit hierarchy and obtaining a plurality of initial running statistics directions and corresponding initial running directions in each video frame include the following specific steps:
acquiring a running statistical direction of each frame of difference video frame;
for any frame of difference video frame, starting from a bit value at the upper left corner in the highest level layering, performing three run statistics in the run statistics direction, recording the run statistics direction with the largest run length as the initial run statistics direction of the bit value, recording the run length of the bit value in the initial run statistics direction as the initial run length of the bit value, and recording the bit values of other same values traversed by the bit value in the initial run statistics direction as the initial run of the bit value; performing run statistics on bit values in each bit hierarchy to obtain run lengths in different initial run statistical directions and corresponding initial runs;
And acquiring a plurality of initial run statistical directions and corresponding initial runs in each video frame.
4. A method for efficiently utilizing regional medical resources according to claim 3, wherein the obtaining the run statistics direction of each frame of the difference video frame comprises the following specific steps:
the right direction of the row and the downward direction of the column in the run statistics row-column direction are respectively marked as X and Y directions, and the direction from the highest-order layering to the lowest-order layering in the bit layering is marked as Z direction; the X, Y, Z direction is collectively referred to as the run-length statistic direction.
5. The method for efficiently utilizing regional medical resources according to claim 1, wherein the obtaining the first runs in each video frame comprises the following specific steps:
for any frame of difference video frame, starting from a bit value at the upper left corner in the highest bit layering, acquiring an initial run and an initial run length of the bit value, acquiring the run lengths of the other two run statistical directions except for the initial run statistical direction corresponding to the initial run for the last bit value in the initial run, taking the run statistical direction corresponding to the largest one of the two run lengths as the run extending direction of the initial run, and extending the initial run Cheng Yanyou; after the extension is completed, carrying out run length statistics on the last bit value of the initial run of extension in the other two run statistical directions except the run extension direction, and continuously selecting the run statistical direction corresponding to the largest one of the two run lengths to extend;
If the maximum run length is less than or equal to the preset extension threshold value, the extension is not performed any more; completing extension of an initial run of a bit value of the upper left corner in the highest bit hierarchy, and marking an obtained result as a first run of the bit value; extending each initial run to obtain a first run;
and extending a plurality of initial runs in each video frame to obtain a plurality of first runs in each video frame.
6. The method for efficient use of regional medical resources according to claim 1, wherein the selecting an initial video frame and combining a first run to obtain a plurality of initial last bit values comprises the following specific steps:
taking the M+1st frame difference video frame as an initial video frame, and recording all bit layers of the initial video frame as initial bit layers; and fixing the number of initial bit layering layers, carrying out statistics of a first run, screening out last bit values in the first run in the lowest bit layering in the initial bit layering, and marking a plurality of last bit values obtained by screening as initial last bit values.
7. The method for efficiently utilizing regional medical resources according to claim 1, wherein the step of obtaining the reference overlap amount of each reference video frame comprises the following specific steps:
And counting the number of bit values of which the same position and the same numerical value are in the same position in all bit layers of the v-th frame difference video frame for a v-th frame difference video frame of an initial video frame, recording the number of initial overlapping of the initial last bit value in the v-th frame difference video frame, acquiring the number of initial overlapping of all initial last bit values in the v-th frame difference video frame, and recording the sum of the number of initial overlapping as the reference overlapping number of the initial video frame in the v-th frame difference video frame.
8. The method for efficiently utilizing regional medical resources according to claim 7, wherein the acquiring the plurality of reference video frames of the initial video frame comprises the following specific steps:
and recording the difference video frames of each adjacent M frames before and after the initial video frame as reference video frames of the initial video frame.
9. A system for efficient use of regional medical resources, the system comprising:
the method comprises the steps of acquiring an original video frame data sequence module and acquiring an original video frame data sequence;
the difference video frame data sequence acquisition module is used for acquiring a difference video frame data sequence consisting of difference video frames according to the difference between the original video frames;
And a final run-length code acquisition module: bit layering is carried out on each frame of difference video frames in the difference video frame data sequence, a running statistics direction is set according to the bit layering, a plurality of initial running statistics directions and corresponding initial running directions in each video frame are obtained, and a plurality of first running directions in each video frame are obtained according to the initial running statistics directions and corresponding initial running directions and the bit layering;
selecting an initial video frame and combining a first run to obtain a plurality of initial final bit values, acquiring a reference overlapping number of each reference video frame according to a plurality of reference video frames and the initial final bit values of the initial video frame, acquiring overlapping bit layering of the initial video frame according to the reference overlapping number, acquiring overlapping bit layering of all difference video frames, respectively placing all the difference video frames into each overlapping bit layering, carrying out first run statistics on each overlapping bit layering, and acquiring a plurality of first runs Cheng Ji as final runs, wherein all the final runs form a final run coding result;
the platform video transmission module is used for transmitting the medical-linkage collaboration platform video according to the final run-length coding result;
the method for obtaining the overlapping bit layering of the initial video frame according to the reference overlapping quantity comprises the following specific steps: marking the reference video frame with the largest reference overlapping number as an inserted video frame of the initial video frame, and sequentially inserting all bit layers of the inserted video frame below the lowest bit layer in the initial bit layers according to the sequence from the highest bit layer to the lowest bit layer; and recording the inserted bit layers as overlapped bit layers of the initial video frame, carrying out statistics of a first run again on the overlapped bit layers of the initial video frame, obtaining last bit values of a plurality of first runs of the lowest bit layers in the overlapped bit layers, continuing to obtain the reference overlapped number of each difference video frame according to the difference video frames of each adjacent M frames before and after the inserted video frame, continuing to insert the difference video frame with the largest reference overlapped number into the overlapped bit layers, and stopping updating the overlapped bit layers if the largest reference overlapped number is smaller than or equal to a splicing stop threshold value, so as to finish overlapped bit layer acquisition of the initial video frame.
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