WO2022221982A1 - 一种图像重建方法、装置、终端设备和存储介质 - Google Patents
一种图像重建方法、装置、终端设备和存储介质 Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration using local operators
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/60—Image enhancement or restoration using machine learning, e.g. neural networks
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20084—Artificial neural networks [ANN]
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20212—Image combination
- G06T2207/20221—Image fusion; Image merging
Definitions
- the present application relates to the technical field of image processing, and in particular, to an image reconstruction method, apparatus, terminal device and storage medium.
- the existing deep learning-based image reconstruction methods can be mainly divided into two categories.
- One is the expansion-based method, which starts from the problem of optimizing the image and then expands an optimization algorithm.
- the architecture of the neural network is based on iterative construction; the other is the non-expanding method, which directly learns the mapping from zero-padding data to full-sampled data to complete image reconstruction.
- neither of these two types of methods can capture the interdependence between different image regions where the content of the feature image is connected, that is, cannot capture the long-range dependencies of the image.
- embodiments of the present application provide an image reconstruction method, apparatus, terminal device, and storage medium, which can capture long-distance dependencies of images.
- a first aspect of the embodiments of the present application provides an image reconstruction method, including:
- a reconstructed image corresponding to the original image is generated according to the fourth feature map.
- the initial feature map of the original image is first extracted, and then the average value of the element values of each column of pixels in the initial feature map is calculated respectively, and a target row vector is constructed according to the average value.
- it is copied in the column direction to obtain a feature map; and, the average value of the element values of each row of pixels in the initial feature map is calculated respectively, and the target column vector is constructed according to the average value.
- the target column vector is constructed according to the average value
- After performing one-dimensional convolution processing on the target column vector it is copied in the row direction to obtain another feature map, and then the two feature maps are fused; finally, after performing two-dimensional convolution processing on the fused feature map , generate a reconstructed image based on this fused feature map.
- the above process adopts a cross-pooling method, which is equivalent to deploying a pooling kernel with a strip shape (one row or one column of the feature map) along a spatial dimension, which can use a wider range of pixels in feature calculation. , thus being able to capture the long-range dependencies of the image.
- the generating the reconstructed image corresponding to the original image according to the fourth feature map may include:
- each of the target feature map combinations includes more than two target feature maps
- the mapping feature map combination includes a mapping feature map obtained after each target feature map in the target feature map combination is processed by a preset mapping function;
- generating the reconstructed image corresponding to the original image according to each combination of the target feature maps and each combination of the mapping feature maps may include:
- a reconstructed image corresponding to the original image is generated according to the final feature map combination.
- a final feature map combination containing a large number of feature maps can be obtained, and then a reconstructed image corresponding to the original image is generated based on the final feature map combination.
- arranging each of the target feature map combinations and each of the mapping feature map combinations in a specified order to obtain a final feature map combination may include:
- Each of the target feature map combinations is arranged at both ends of the final feature map combination, and each of the mapping feature map combinations is arranged between two ends of the final feature map combination.
- each target feature map combination can be arranged at both ends, and each mapping feature map combination can be arranged in the middle.
- generating the reconstructed image corresponding to the original image according to the final feature map combination may include:
- Deconvolution processing is performed on the feature maps in the final feature map combination, and then the feature maps after the deconvolution processing are fused to obtain a reconstructed image corresponding to the original image.
- the feature map in the final feature map combination can be input into the deconvolution layer for processing, and the dimension of the feature map can be increased, so that the processed result is consistent with the dimension of the reconstructed image.
- mapping feature map combination corresponding to the target feature map combination by using feature mapping may include:
- mapping processing is performed on each target feature map in the target feature map combination, respectively, to obtain a mapping feature map corresponding to each target feature map in the target feature map combination.
- mapping function By adopting a linear function as the mapping function, the computational complexity of the feature mapping process can be further reduced.
- the fusion of the first feature map and the second feature map to obtain a third feature map may include:
- the process of summing corresponding position elements is performed on the first feature map and the second feature map to obtain the third feature map.
- a second aspect of the embodiments of the present application provides an image reconstruction apparatus, including:
- an original image acquisition module used to acquire the original image to be reconstructed
- a feature extraction module for extracting the initial feature map of the original image
- a row vector building module used to calculate the average value of the element values of each column of pixels in the initial feature map respectively, and to construct a target row vector according to the obtained average value corresponding to each column of pixels;
- a column vector building module used to calculate the average value of the element values of each row of pixels in the initial feature map respectively, and construct a target column vector according to the obtained average value corresponding to each row of pixels;
- a row vector duplication module for performing one-dimensional convolution processing on the target row vector, and duplicating the target row vector after the one-dimensional convolution processing in the column direction to obtain a first feature map
- a column vector duplication module for performing one-dimensional convolution processing on the target column vector, and duplicating the target column vector after the one-dimensional convolution processing in the row direction to obtain a second feature map
- a feature fusion module configured to fuse the first feature map and the second feature map to obtain a third feature map
- a two-dimensional convolution module configured to perform two-dimensional convolution processing on the third feature map to obtain a fourth feature map
- An image reconstruction module configured to generate a reconstructed image corresponding to the original image according to the fourth feature map.
- a third aspect of the embodiments of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, when the processor executes the computer program
- the image reconstruction method provided by the first aspect of the embodiments of the present application is implemented.
- a fourth aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the implementation of the first aspect of the embodiments of the present application is implemented image reconstruction method.
- a fifth aspect of the embodiments of the present application provides a computer program product, which enables the terminal device to execute the image reconstruction method described in the first aspect of the embodiments of the present application when the computer program product runs on a terminal device.
- FIG. 1 is a flowchart of an embodiment of an image reconstruction method provided by an embodiment of the present application
- FIG. 2 is a schematic diagram of processing a cross-pooling operation on a feature map provided by an embodiment of the present application
- FIG. 3 is a flowchart of an embodiment of another image reconstruction method provided by an embodiment of the present application.
- FIG. 4 is a schematic diagram of processing a feature mapping operation on a feature map provided by an embodiment of the present application
- FIG. 5 is a structural diagram of an embodiment of an image reconstruction apparatus provided by an embodiment of the present application.
- FIG. 6 is a schematic diagram of a terminal device provided by an embodiment of the present application.
- the present application proposes an image reconstruction method, apparatus, terminal device and storage medium, which can solve the problem that the long-distance dependency of the image cannot be captured when reconstructing the image.
- the execution body of each method embodiment of the present application is various types of terminal devices or servers, such as mobile phones, tablet computers, notebook computers, desktop computers, and wearable devices.
- an image reconstruction method provided by an embodiment of the present application is shown, including:
- the original image to be reconstructed is acquired.
- the original image may be a blurred image, and a clear image corresponding to it needs to be reconstructed.
- the feature map of the original image needs to be extracted.
- various feature extraction networks in the prior art may be used to perform convolution and other processing on the original image to extract a corresponding feature image as the initial feature map in the embodiment of the present application. It should be noted that this application does not impose any restrictions on the structure and type of the feature extraction network.
- the average value of the element values of each row of pixels in the initial feature map is calculated respectively. For example, for the first row of pixels in the initial feature map, the row Add the element values of all the pixels of average value. Next, a target column vector is constructed according to the obtained average values of pixels in each row. The number of elements of the target column vector is equal to the number of rows of the initial feature map, and each element value is the average of the element values of the corresponding row. value, that is, the average values corresponding to each row of pixels are combined into a column vector.
- the obtained target row vector first perform one-dimensional convolution processing on it, for example, a 1D convolution with a convolution kernel of 3 can be used, and then copy the target row vector after one-dimensional convolution processing in the column direction , to get the first feature map.
- the size (number of rows and columns) of the first feature map obtained by copying the target row vector may be the same as the size of the initial feature map.
- one-dimensional convolution processing is also performed on it first, for example, a 1D convolution with a convolution kernel of 3 can be used, and then the target column after one-dimensional convolution processing is processed in the row direction.
- the vector is copied to obtain the second feature map.
- the size (number of rows and columns) of the second feature map obtained by copying the target column vector may also be the same as the size of the initial feature map.
- the first feature map and the second feature map are fused, and the fusion method may include stacking corresponding position elements, taking the maximum value of the corresponding position elements, taking the average value of the corresponding position elements, etc., so as to obtain a third feature map with the same size .
- the fusion of the first feature map and the second feature map to obtain a third feature map may include:
- the process of summing corresponding position elements is performed on the first feature map and the second feature map to obtain the third feature map.
- the method of summing the corresponding position elements can be adopted.
- the elements of the first row and column of the first feature map are summed with the elements of the first row and column of the second feature map to obtain the elements of the first row and column of the third feature map.
- the elements of the first row and the second column of the first feature map are summed with the elements of the first row and the second column of the second feature map, so as to obtain the elements of the first row and the second column of the third feature map, And so on.
- a two-dimensional convolution process is performed on the third feature map obtained by fusion, for example, a 2D convolution with a convolution kernel of 3 may be used to obtain a fourth feature map.
- FIG. 2 a schematic diagram of the corresponding processing is shown in FIG. 2 .
- Figure 2 first extract the average value of the element values of each column of pixels in the initial feature map to construct a target row vector, and extract the average value of the element values of each row of pixels in the initial feature map to construct a target column vector; then , perform one-dimensional convolution processing on the target row vector and target column vector respectively, copy the target row vector in the column direction to obtain the first feature map, and copy the target column vector in the row direction to obtain the second feature map ;
- the first feature map and the second feature map are superimposed to obtain a third feature map, and after two-dimensional convolution processing, a fourth feature map is obtained.
- the size of the pooling kernel of the pooling layer used is usually 2*2, and the output feature map is obtained by continuously sliding the pooling kernel on the entire original feature map.
- the fused features are all features in a narrow pixel range, so the long-distance dependencies of the image cannot be captured.
- the embodiment of the present application uses a cross-pooling layer to replace the conventional pooling layer, and the size of the corresponding pooling kernel is the same as one row or one column of the feature image. Therefore, the pixel range of the fused feature during calculation is wider. Ability to adequately capture long-range dependencies in images.
- the initial feature map of the original image is first extracted, and then the average value of the element values of each column of pixels in the initial feature map is calculated respectively, and a target row vector is constructed according to the average value.
- it is copied in the column direction to obtain a feature map; and, the average value of the element values of each row of pixels in the initial feature map is calculated respectively, and the target column vector is constructed according to the average value.
- the target column vector is constructed according to the average value
- After performing one-dimensional convolution processing on the target column vector it is copied in the row direction to obtain another feature map, and then the two feature maps are fused; finally, after performing two-dimensional convolution processing on the fused feature map , generate a reconstructed image based on this fused feature map.
- the above process adopts a cross-pooling method, which is equivalent to deploying a pooling kernel with a strip shape (one row or one column of the feature map) along a spatial dimension, which can use a wider range of pixels in feature calculation. , thus being able to capture the long-range dependencies of the image.
- FIG. 3 another image reconstruction method provided by an embodiment of the present application is shown, including:
- Steps 301-308 are the same as steps 101-108, for details, please refer to the relevant description of steps 101-108.
- steps 309 to 311 may be used to increase the number of obtained feature maps.
- each target feature map combination contains more than two target feature maps.
- the number of target feature maps contained in different target feature map combinations may be the same or different, and the method of grouping the target feature maps may be random grouping, grouping according to a specific order, etc. Not limited.
- mapping feature map combination includes the mapping feature map obtained after each target feature map in the target feature map combination is processed by a preset mapping function;
- each mapping feature map included in a certain mapping feature map combination is obtained after each target feature map included in the corresponding target feature map combination is processed by a mapping function.
- a certain target feature map combination A contains a total of 3 target feature maps: target feature map 1, target feature map 2 and target feature map 3, then a preset mapping function f(x) is used to map the target feature map 1.
- the map feature map combination corresponding to the target feature map combination A consists of map feature map 1, map feature map 2, and map feature map 3.
- mapping feature map combination corresponding to the target feature map combination by using feature mapping may include:
- mapping processing is performed on each target feature map in the target feature map combination, respectively, to obtain a mapping feature map corresponding to each target feature map in the target feature map combination.
- a linear function can be used as the mapping function.
- a and x are multiplied by the corresponding positions of the matrix, and then the elements in the matrix b are added to obtain the output mapping feature map f(x).
- a larger number of feature maps can be generated, that is, the above-mentioned combination of each mapped feature map.
- a reconstructed image corresponding to the original image can be generated according to the original target feature map combination and the generated mapping feature map combination.
- generating the reconstructed image corresponding to the original image according to each combination of the target feature maps and each combination of the mapping feature maps may include:
- a reconstructed image corresponding to the original image is generated according to the final feature map combination.
- each target feature map combination and each mapping feature map combination is not limited, but the order of each feature map included in each feature map combination in the feature map combination remains unchanged.
- a final feature map combination containing a large number of feature maps can be obtained, and then a reconstructed image corresponding to the original image is generated based on the final feature map combination.
- arranging each of the target feature map combinations and each of the mapping feature map combinations in a specified order to obtain a final feature map combination may include:
- Each of the target feature map combinations is arranged at both ends of the final feature map combination, and each of the mapping feature map combinations is arranged between two ends of the final feature map combination.
- each target feature map combination can be arranged at both ends, and each mapping feature map combination can be arranged in the middle. For example, if there are 2 target feature map combinations, one of the target feature map combinations can be copied as the head end of the final feature map combination, and the other target feature map combination can be copied as the tail end of the final feature map combination.
- the two target feature map combinations obtained by performing feature mapping on the two target feature map combinations are arranged between the first and last ends of the final feature map combination.
- generating the reconstructed image corresponding to the original image according to the final feature map combination may include:
- Deconvolution processing is performed on the feature maps in the final feature map combination, and then the feature maps after the deconvolution processing are fused to obtain a reconstructed image corresponding to the original image.
- the feature map in the final feature map combination can be input into the deconvolution layer for processing, and the dimension of the feature map can be increased, so that the processed result is consistent with the dimension of the reconstructed image.
- the above steps 310-312 belong to the processing of performing feature mapping on the feature map, and a schematic diagram of the corresponding processing is shown in FIG. 4 .
- the multiple target feature maps are divided into 2 target feature map combinations, and after the convolution processing of the 3*3 convolution kernel, one of the target feature map combinations is copied as the head of the final feature map combination. Copy another target feature map combination as the tail end of the final feature map combination; in addition, perform feature mapping processing on the two target feature map combinations respectively, and the obtained 2 mapped feature map combinations are inserted into the final feature map combination between the head and tail ends.
- image reconstruction can be done based on this final feature map combination.
- the embodiment of the present application Compared with the method of initializing more convolution kernels to perform convolution operations to obtain a greater number of feature maps, the embodiment of the present application generates a greater number of feature maps by performing feature mapping on the original feature maps, which can avoid The complex convolution operation effectively reduces the amount of calculation and improves the processing speed of the algorithm.
- a feature map is used to generate a larger number of feature maps, so as to obtain more feature maps under the premise of lower computational cost. Can improve the performance of deep neural networks used for image reconstruction.
- an embodiment of an image reconstruction apparatus in an embodiment of the present application includes:
- An original image acquisition module 501 configured to acquire an original image to be reconstructed
- Feature extraction module 502 for extracting the initial feature map of the original image
- Row vector building module 503 for calculating the average value of the element values of each column of pixels in the initial feature map respectively, and constructing a target row vector according to the obtained average value corresponding to each column of pixels;
- Column vector construction module 504 for calculating the average value of the element values of each row of pixels in the initial feature map respectively, and constructing a target column vector according to the average value corresponding to each row of pixels obtained;
- Row vector copying module 505 for performing one-dimensional convolution processing on the target row vector, and copying the target row vector after the one-dimensional convolution processing in the column direction to obtain a first feature map
- Column vector copying module 506 for performing one-dimensional convolution processing on the target column vector, and copying the target column vector after the one-dimensional convolution processing in the row direction to obtain a second feature map;
- a feature fusion module 507 configured to fuse the first feature map and the second feature map to obtain a third feature map
- a two-dimensional convolution module 508, configured to perform two-dimensional convolution processing on the third feature map to obtain a fourth feature map
- the image reconstruction module 509 is configured to generate a reconstructed image corresponding to the original image according to the fourth feature map.
- the image reconstruction module may include:
- a convolution processing unit configured to perform convolution processing with a preset number of convolution kernels on the fourth feature map to obtain multiple target feature maps
- a feature map dividing unit configured to divide the multiple target feature maps into two or more target feature map combinations, each of the target feature map combinations comprising more than two target feature maps;
- the feature mapping unit is used to perform two-dimensional convolution processing on each target feature map in the target feature map combination for each target feature map combination, and then generate a combination with the target feature map by means of feature mapping
- the corresponding mapping feature map combination, the mapping feature map combination includes the mapping feature map obtained after each target feature map in the target feature map combination is processed by a preset mapping function;
- An image reconstruction unit configured to generate a reconstructed image corresponding to the original image according to each combination of the target feature maps and each combination of the mapping feature maps.
- the image reconstruction unit may include:
- the feature map combination arrangement subunit is used for arranging each of the target feature map combinations and each of the mapping feature map combinations in a specified order to obtain a final feature map combination;
- An image reconstruction subunit configured to generate a reconstructed image corresponding to the original image according to the final feature map combination.
- the feature map combination and arrangement subunit may be used to: arrange each of the target feature map combinations on both ends of the final feature map combination, and arrange each of the mapped feature map combinations on the final feature map. between the two ends of the graph combination.
- the image reconstruction subunit can be used to: perform deconvolution processing on the feature maps in the final feature map combination, and then fuse the feature maps after the deconvolution processing to obtain the corresponding feature maps of the original image. Rebuild the image.
- the feature mapping unit can be used to: use a preset linear function as a mapping function, respectively perform feature mapping processing on each target feature map in the target feature map combination, and obtain each target feature map combination in the target feature map combination.
- the corresponding mapping feature maps of each target feature map can be used to: use a preset linear function as a mapping function, respectively perform feature mapping processing on each target feature map in the target feature map combination, and obtain each target feature map combination in the target feature map combination.
- the corresponding mapping feature maps of each target feature map can be used to: use a preset linear function as a mapping function, respectively perform feature mapping processing on each target feature map in the target feature map combination, and obtain each target feature map combination in the target feature map combination.
- the corresponding mapping feature maps of each target feature map can be used to: use a preset linear function as a mapping function, respectively perform feature mapping processing on each target feature map in the target feature map combination, and obtain each target feature map combination in the target feature map combination.
- the corresponding mapping feature maps of each target feature map can be
- the feature fusion module may be configured to: perform a process of summing corresponding position elements on the first feature map and the second feature map to obtain the third feature map.
- Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any one of the image reconstruction methods shown in FIG. 1 or FIG. 3 is implemented .
- Embodiments of the present application further provide a computer program product, which, when the computer program product runs on a terminal device, enables the terminal device to execute any image reconstruction method as shown in FIG. 1 or FIG. 3 .
- FIG. 6 is a schematic diagram of a terminal device provided by an embodiment of the present application.
- the terminal device 6 in this embodiment includes: a processor 60 , a memory 61 , and a computer program 62 stored in the memory 61 and running on the processor 60 .
- the processor 60 executes the computer program 62
- the steps in the above embodiments of the image reconstruction methods are implemented, for example, steps 101 to 109 shown in FIG. 1 .
- the processor 60 executes the computer program 62
- the functions of the modules/units in the foregoing device embodiments, for example, the functions of the modules 501 to 509 shown in FIG. 5 are implemented.
- the computer program 62 may be divided into one or more modules/units, which are stored in the memory 61 and executed by the processor 60 to complete the present application.
- the one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program 62 in the terminal device 6 .
- the so-called processor 60 may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuits) Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
- the memory 61 may be an internal storage unit of the terminal device 6 , such as a hard disk or a memory of the terminal device 6 .
- the memory 61 may also be an external storage device of the terminal device 6, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) equipped on the terminal device 6 card, Flash Card, etc.
- the memory 61 may also include both an internal storage unit of the terminal device 6 and an external storage device.
- the memory 61 is used to store the computer program and other programs and data required by the terminal device.
- the memory 61 can also be used to temporarily store data that has been output or will be output.
- the disclosed apparatus and method may be implemented in other manners.
- the system embodiments described above are only illustrative.
- the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods.
- multiple units or components may be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented.
- the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
- the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
- the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
- the present application can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing the relevant hardware through a computer program.
- the computer program can be stored in a computer-readable storage medium, and the computer When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented.
- the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like.
- the computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.
- ROM Read-Only Memory
- RAM Random Access Memory
- electric carrier signal telecommunication signal and software distribution medium, etc.
- the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Excluded are electrical carrier signals and telecommunication signals.
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Abstract
Description
Claims (10)
- 一种图像重建方法,其特征在于,包括:获取待重建的原始图像;提取所述原始图像的初始特征图;分别计算所述初始特征图中每一列像素的元素值的平均值,并根据获得的各列像素对应的平均值构建目标行向量;分别计算所述初始特征图中每一行像素的元素值的平均值,并根据获得的各行像素对应的平均值构建目标列向量;对所述目标行向量执行一维卷积处理,并在列方向上对一维卷积处理后的所述目标行向量进行复制,得到第一特征图;对所述目标列向量执行一维卷积处理,并在行方向上对一维卷积处理后的所述目标列向量进行复制,得到第二特征图;将所述第一特征图和所述第二特征图融合,得到第三特征图;对所述第三特征图执行二维卷积处理,得到第四特征图;根据所述第四特征图生成所述原始图像对应的重建图像。
- 如权利要求1所述的方法,其特征在于,所述根据所述第四特征图生成所述原始图像对应的重建图像,包括:对所述第四特征图执行预设卷积核数量的卷积处理,得到多张目标特征图;将所述多张目标特征图划分为两个以上的目标特征图组合,每个所述目标特征图组合包含两张以上的所述目标特征图;针对每个所述目标特征图组合,对该目标特征图组合中的每张目标特征图分别执行二维卷积处理,然后采用特征映射的方式生成与该目标特征图组合对应的映射特征图组合,该映射特征图组合包含该目标特征图组合中每张目标特征图各自经预设的映射函数处理后获得的映射特征图;根据各个所述目标特征图组合和各个所述映射特征图组合,生成所述原始图像对应的重建图像。
- 如权利要求2所述的方法,其特征在于,所述根据各个所述目标特征图组合和各个所述映射特征图组合,生成所述原始图像对应的重建图像,包括:将各个所述目标特征图组合和各个所述映射特征图组合按照指定顺序排列,得到最终特征图组合;根据所述最终特征图组合生成所述原始图像对应的重建图像。
- 如权利要求3所述的方法,其特征在于,所述将各个所述目标特征图组合和各个所述映射特征图组合按照指定顺序排列,得到最终特征图组合,包括:将各个所述目标特征图组合排列在所述最终特征图组合的两端,且将各个所述映射特征图组合排列在所述最终特征图组合的两端之间。
- 如权利要求3所述的方法,其特征在于,所述根据所述最终特征图组合生成所述原始图像对应的重建图像,包括:对所述最终特征图组合中的特征图执行反卷积处理,然后将反卷积处理后的特征图融合,得到所述原始图像对应的重建图像。
- 如权利要求2所述的方法,其特征在于,所述采用特征映射的方式生成与该目标特征图组合对应的映射特征图组合,包括:以预设的线性函数作为映射函数,对该目标特征图组合中的每张目标特征图分别执行特征映射处理,得到该目标特征图组合中的每张目标特征图各自对应的映射特征图。
- 如权利要求1至6中任一项所述的方法,其特征在于,所述将所述第一特征图和所述第二特征图融合,得到第三特征图,包括:对所述第一特征图和所述第二特征图执行对应位置元素求和的处理,得到所述第三特征图。
- 一种图像重建装置,其特征在于,包括:原始图像获取模块,用于获取待重建的原始图像;特征提取模块,用于提取所述原始图像的初始特征图;行向量构建模块,用于分别计算所述初始特征图中每一列像素的元素值的平均值,并根据获得的各列像素对应的平均值构建目标行向量;列向量构建模块,用于分别计算所述初始特征图中每一行像素的元素值的平均值,并根据获得的各行像素对应的平均值构建目标列向量;行向量复制模块,用于对所述目标行向量执行一维卷积处理,并在列方向上对一维卷积处理后的所述目标行向量进行复制,得到第一特征图;列向量复制模块,用于对所述目标列向量执行一维卷积处理,并在行方向上对一维卷积处理后的所述目标列向量进行复制,得到第二特征图;特征融合模块,用于将所述第一特征图和所述第二特征图融合,得到第三特征图;二维卷积模块,用于对所述第三特征图执行二维卷积处理,得到第四特征图;图像重建模块,用于根据所述第四特征图生成所述原始图像对应的重建图像。
- 一种终端设备,包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序,其特征在于,所述处理器执行所述计算机程序时实现如权利要求1至7中任一项所述的图像重建方法。
- 一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,其特征在于,所述计算机程序被处理器执行时实现如权利要求1至7中任一项所述的图像重建方法。
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