Shading correction device, method and program
AssigneeFUJIFILM Corporation
InventorTakeshi KUWABARA
Life of this patent
Estimating the term…
Abstract
A shading correction of radiographic image data, which represents a radiographic image of a subject obtained by detecting radiation emitted from a radiation source and transmitted through the subject with a radiation detector, is carried out. At this time, first shading correction data for correcting for shading attributed to the radiation source and second shading correction data for correcting for shading attributed to the radiation detector are rotated relatively to each other depending on a rotational positional relationship between the radiation source and the radiation detector, and final shading correction data is obtained from the rotated first and second shading correction data. Then, shading of the radiographic image data is corrected for using the final shading correction data.
Claims8
A shading correction device for applying shading correction to radiographic image data representing a radiographic image of a subject, the radiographic image being obtained by detecting radiation emitted from a radiation source and transmitted through the subject with a radiation detector, the device comprising:
- storage means for storing first shading correction data for correcting for shading attributed to the radiation source, and second shading correction data for correcting for shading attributed to the radiation detector;
- shading correction data obtaining means for rotating the first and second shading correction data relatively to each other depending on a rotational positional relationship between the radiation source and the radiation detector, and obtaining final shading correction data from the rotated first and second shading correction data;
- and
- correcting means for correcting for shading of the radiographic image data using the final shading correction data.
A shading correction device for applying shading correction to radiographic image data representing a radiographic image of a subject, the radiographic image being obtained by detecting radiation emitted from a radiation source and transmitted through the subject with a radiation detector, the device comprising:
- storage means for storing pieces of shading correction data corresponding to different rotational positional relationships between the radiation source and the radiation detector;
- and
- correcting means for selecting final shading correction data from the pieces of shading correction data depending on a rotational positional relationship between the radiation source and the radiation detector, and correcting for shading of the radiographic image data using the selected shading correction data.
A shading correction method of applying shading correction to radiographic image data representing a radiographic image of a subject, the radiographic image being obtained by detecting radiation emitted from a radiation source and transmitted through the subject with a radiation detector, the method comprising:
- rotating first shading correction data for correcting for shading attributed to the radiation source and second shading correction data for correcting for shading attributed to the radiation detector relatively to each other depending on a rotational positional relationship between the radiation source and the radiation detector;
- obtaining final shading correction data from the rotated first and second shading correction data;
- and
- correcting for shading of the radiographic image data using the final shading correction data.
A shading correction method of applying shading correction to radiographic image data representing a radiographic image of a subject, the radiographic image being obtained by detecting radiation emitted from a radiation source and transmitted through the subject with a radiation detector, the method comprising:
- selecting final shading correction data depending on a rotational positional relationship between the radiation source and the radiation detector from pieces of shading correction data corresponding to different rotational positional relationships between the radiation source and the radiation detector;
- and
- correcting for shading of the radiographic image data using the selected shading correction data.
A computer-readable recording medium containing a program for causing a computer to function as a shading correction device for applying shading correction to radiographic image data representing a radiographic image of a subject, the radiographic image being obtained by detecting radiation emitted from a radiation source and transmitted through the subject with a radiation detector, the program causing the computer to function as:
- storage means for storing first shading correction data for correcting for shading attributed to the radiation source, and second shading correction data for correcting for shading attributed to the radiation detector;
- shading correction data obtaining means for rotating the first and second shading correction data relatively to each other depending on a rotational positional relationship between the radiation source and the radiation detector, and obtaining final shading correction data from the rotated first and second shading correction data;
- and
- correcting means for correcting for shading of the radiographic image data using the final shading correction data.
A computer-readable recording medium containing a program for causing a computer to function as a shading correction device for applying shading correction to radiographic image data representing a radiographic image of a subject, the radiographic image being obtained by detecting radiation emitted from a radiation source and transmitted through the subject with a radiation detector, the program causing the computer to function as:
- storage means for storing pieces of shading correction data corresponding to different rotational positional relationships between the radiation source and the radiation detector;
- and
- correcting means for selecting final shading correction data from the pieces of shading correction data depending on a rotational positional relationship between the radiation source and the radiation detector, and correcting for shading of the radiographic image data using the selected shading correction data.
Dependencies are inferred from the claim text.