FIELD: photography.
SUBSTANCE: group of inventions relates to methods and devices for formation of differential phase contrast images. To correct data 52 of differential phase image, data 52 of differential phase image is taken, obtained using radiation at different energy levels, said data 52 of differential phase image contains pixels 60, each pixel 60 has value 62a, 62b, 62c of phase gradient for each energy level. Then energy-dependant behaviour of values 62a, 62b, 62c of pixel 60 phase gradient it is determined, and corrected value 68 of gradient phase for pixel 60 is determined based on values of 62a, 62b, 62c of pixel 60 phase gradient, and a model for dependence of values 62a, 62b, 62c of phase gradient on energy.
EFFECT: technical result is possibility of correcting the number of artefacts in image data.
15 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| IMAGE FORMING DEVICE OF PHASE CONTRAST | 2012 |
|
RU2620892C2 |
| DIFFERENTIAL PHASE-CONTRAST IMAGING | 2011 |
|
RU2572644C2 |
| IMAGE FORMING BY DIFFERENTIAL PHASE CONTRAST | 2011 |
|
RU2573114C2 |
| DIFFERENTIAL PHASE-CONTRAST IMAGING WITH INCREASED DYNAMIC RANGE | 2012 |
|
RU2596805C2 |
| X-RAY PHASE-CONTRAST AND DARKFIELD IMAGING WITH SINGLE FRAME | 2018 |
|
RU2786731C2 |
| CALIBRATION PHANTOM OF HARDWARE FOR DIFFERENTIAL PHASE-CONTRAST VISUALIZATION | 2015 |
|
RU2681418C2 |
| X-RAY IMAGING DEVICE AND X-RAY IMAGING METHOD | 2010 |
|
RU2491578C1 |
| MATCHING OF THE AUXILIARY X-RAY IMAGE AND THE BASIC X-RAY IMAGE | 2012 |
|
RU2608475C2 |
| PHASE-CONTRAST IMAGE FORMATION | 2010 |
|
RU2545319C2 |
| PASSIVE PRESSURE CONTROL DEVICE IN SHELL, SHELL AND CORRESPONDING INSTALLATION | 2012 |
|
RU2600725C2 |
