CLOUD-CONNECTED X-RAY COMPUTED TOMOGRAPHY

1 . A method comprising:

receiving radiograph data that has been at least partially processed locally at a computer coupled with a computed tomography scanner, wherein the radiograph data is for a physical object that has been scanned by the computed tomography scanner;

generating a three-dimensional reconstruction of the physical object from the radiograph data;

breaking the three-dimensional reconstruction of the physical object into chunks of data selected to match an expected access pattern for data in the three-dimensional reconstruction;

compressing the chunks of data to form compressed chunks;

storing the compressed chunks on one or more computers communicatively coupled with a computer network with which the computer coupled with the computed tomography scanner is communicatively coupled;

producing, on the one or more computers, a compressed and downsampled subset of the three-dimensional reconstruction of the physical object from a proper subset of the compressed chunks in response to a request to access the three-dimensional reconstruction in a specified view, wherein the compressed chunks are selected for the proper subset based on the specified view; and

sending the compressed and downsampled subset of the three-dimensional reconstruction of the physical object over the computer network to a target computer, wherein the target computer is the computer coupled with the computed tomography scanner or a different computer communicatively coupled with the computer network.

2 . The method of claim 1 , wherein each of the generating, the breaking and the compressing are done locally at the computer coupled with the computed tomography scanner, and the method comprises:

sending the compressed chunks from the computer coupled with the computed tomography scanner to the one or more computers through the computer network.

3 . The method of claim 1 , wherein each of the generating, the breaking and the compressing are done at the one or more computers, and the method comprises:

sending the radiograph data from the computer coupled with the computed tomography scanner to the one or more computers through the computer network.

4 . The method of claim 1 , comprising:

compressing the radiograph data to form compressed radiograph data locally at the computer coupled with the computed tomography scanner; and

sending the compressed radiograph data from the computer coupled with the computed tomography scanner to the one or more computers through the computer network.

5 . The method of claim 4 , comprising:

obtaining bandwidth information for a network connection between the computer network and the computer coupled with the computed tomography scanner;

determining that the bandwidth information satisfies a threshold; and

in response to determining that the bandwidth information satisfies the threshold, compressing the radiograph data using a lossless compression technique.

6 . The method of claim 4 , comprising:

obtaining bandwidth information for a network connection between the computer network and the computer coupled with the computed tomography scanner;

determining that the bandwidth information does not satisfy a threshold; and

in response to determining that the bandwidth information does not satisfy the threshold, compressing the radiograph data using a lossy compression technique.

7 . The method of claim 1 , wherein producing the compressed and downsampled subset of the three-dimensional reconstruction of the physical object from the proper subset of the compressed chunks comprises:

decompressing the proper subset of the compressed chunks to form a subset of the three-dimensional reconstruction of the physical object;

downsampling the subset of the three-dimensional reconstruction of the physical object to form a downsampled subset of the three-dimensional reconstruction of the physical object at a target resolution, wherein the target resolution is a lower resolution than a resolution of the three-dimensional reconstruction of the physical object; and

compressing the downsampled subset of the three-dimensional reconstruction of the physical object to form the compressed and downsampled subset of the three-dimensional reconstruction of the physical object.

8 . The method of claim 7 , wherein downsampling the subset of the three-dimensional reconstruction of the physical object comprises:

obtaining configuration data of at least one of the computer network, the target computer, and user preference;

determining the target resolution based on the configuration data; and

downsampling the subset of the three-dimensional reconstruction of the physical object to form the downsampled subset of the three-dimensional reconstruction of the physical object at the target resolution.

9 . The method of claim 7 , wherein downsampling the subset of the three-dimensional reconstruction of the physical object comprises:

downsampling the three-dimensional reconstruction of the physical object at a plurality of resolutions to form downsampled three-dimensional reconstruction of the physical object at the plurality of resolutions;

obtaining configuration data of at least one of the computer network, the target computer, and user preference;

determining the target resolution based on the configuration data; and

determining, from the downsampled three-dimensional reconstruction of the physical object at the plurality of resolutions, the downsampled subset of the three-dimensional reconstruction of the physical object at the target resolution.

10 . The method of claim 1 , further comprising:

receiving a second request to access the radiograph data in a second specified view;

selecting a proper subset of the radiograph data based on the second specified view;

downsampling the proper subset of the radiograph data to form a downsampled subset of the radiograph data; and

sending the downsampled subset of the radiograph data over the computer network to the target computer.

11 . The method of claim 1 , wherein the specified view comprises a three-dimensional region of interest.

12 . The method of claim 1 , comprising:

determining, based on one or more factors, whether each of the generating, the breaking and the compressing are done locally at the computer coupled with the computed tomography scanner or at the one or more computers.

13 . The method of claim 1 , wherein the computer network is Internet, and a size of the compressed and downsampled subset of the three-dimensional reconstruction of the physical object is within a range set to facilitate streaming the three-dimensional reconstruction of the physical object through the Internet via a content delivery network.

14 . The method of claim 1 , wherein no dimension of the compressed and downsampled subset of the three-dimensional reconstruction of the physical object is greater than 2048 pixels or voxels.

15 . The method of claim 1 , further comprising:

predicting a next view to be specified based on a user's one or more interactions with prior scan data.

16 . The method of claim 1 , wherein compressing the chunks of data to form the compressed chunks comprises:

obtaining bandwidth information for one or more of (i) a network connection between the computer network and the computer coupled with the computed tomography scanner, and (ii) a network connection between the computer network and the target computer;

determining that the bandwidth information satisfies a threshold; and

in response to determining that the bandwidth information satisfies the threshold, compressing the chunks of data using a lossless compression technique.

17 . The method of claim 1 , wherein compressing the chunks of data to form the compressed chunks comprises:

obtaining bandwidth information for one or more of (i) a network connection between the computer network and the computer coupled with the computed tomography scanner, and (ii) a network connection between the computer network and the target computer;

determining that the bandwidth information does not satisfy a threshold; and

in response to determining that the bandwidth information does not satisfy the threshold, compressing the chunks of data using a lossy compression technique.

18 . A system comprising:

a data processing apparatus including at least one hardware processor; and

a non-transitory computer-readable medium encoding instructions configured to cause the data processing apparatus to perform operations comprising:

receiving radiograph data that has been at least partially processed locally at a computer coupled with a computed tomography scanner, wherein the radiograph data is for a physical object that has been scanned by the computed tomography scanner;

generating a three-dimensional reconstruction of the physical object from the radiograph data;

breaking the three-dimensional reconstruction of the physical object into chunks of data selected to match an expected access pattern for data in the three-dimensional reconstruction;

compressing the chunks of data to form compressed chunks;

storing the compressed chunks on one or more computers communicatively coupled with a computer network with which the computer coupled with the computed tomography scanner is communicatively coupled;

producing, on the one or more computers, a compressed and downsampled subset of the three-dimensional reconstruction of the physical object from a proper subset of the compressed chunks in response to a request to access the three-dimensional reconstruction in a specified view, wherein the compressed chunks are selected for the proper subset based on the specified view; and

sending the compressed and downsampled subset of the three-dimensional reconstruction of the physical object over the computer network to a target computer, wherein the target computer is the computer coupled with the computed tomography scanner or a different computer communicatively coupled with the computer network.

19 . The system of claim 18 , wherein the operations comprise:

compressing the radiograph data to form compressed radiograph data locally at the computer coupled with the computed tomography scanner; and

sending the compressed radiograph data from the computer coupled with the computed tomography scanner to the one or more computers through the computer network.

20 . A non-transitory computer-readable medium encoding instructions operable to cause data processing apparatus to perform operations comprising:

receiving radiograph data that has been at least partially processed locally at a computer coupled with a computed tomography scanner, wherein the radiograph data is for a physical object that has been scanned by the computed tomography scanner;

generating a three-dimensional reconstruction of the physical object from the radiograph data;

breaking the three-dimensional reconstruction of the physical object into chunks of data selected to match an expected access pattern for data in the three-dimensional reconstruction;

compressing the chunks of data to form compressed chunks;

storing the compressed chunks on one or more computers communicatively coupled with a computer network with which the computer coupled with the computed tomography scanner is communicatively coupled;

producing, on the one or more computers, a compressed and downsampled subset of the three-dimensional reconstruction of the physical object from a proper subset of the compressed chunks in response to a request to access the three-dimensional reconstruction in a specified view, wherein the compressed chunks are selected for the proper subset based on the specified view; and

sending the compressed and downsampled subset of the three-dimensional reconstruction of the physical object over the computer network to a target computer, wherein the target computer is the computer coupled with the computed tomography scanner or a different computer communicatively coupled with the computer network.

21 . The non-transitory computer-readable medium of claim 20 , wherein producing the compressed and downsampled subset of the three-dimensional reconstruction of the physical object from the proper subset of the compressed chunks comprises:

decompressing the proper subset of the compressed chunks to form a subset of the three-dimensional reconstruction of the physical object;

downsampling the subset of the three-dimensional reconstruction of the physical object to form a downsampled subset of the three-dimensional reconstruction of the physical object at a target resolution, wherein the target resolution is a lower resolution than a resolution of the three-dimensional reconstruction of the physical object; and

compressing the downsampled subset of the three-dimensional reconstruction of the physical object to form the compressed and downsampled subset of the three-dimensional reconstruction of the physical object.