Method and apparatus for determining touch panel to object distance in X-ray imaging

An apparatus for determining a touch panel to object distance (TOD) in X-ray imaging, comprising:

• obtaining processing circuitry configured to obtain a three-dimensional image of a to-be-detected subject that comprises an object;
• first determining processing circuitry configured to determine a source to image distance (SID) and a touch panel to detector distance (TDD);
• second determining processing circuitry configured to determine, based on the three-dimensional image, a distance between a light source of a camera assembly that captures the three-dimensional image and a predetermined point located on a surface of the to-be-detected subject;
• and
• third determining processing circuitry configured to determine the TOD based on the SID, the TDD, and the distance between the light source and the predetermined point by evaluating:
• TOD=γ*(SID−TDD−SOSD1), wherein:
• the predetermined point corresponds to an X-ray imagine protocol,
• the light source is not part of an X-ray source used for the X-ray imaging,
• the distance SOSD1 between the X-ray source and the predetermined point is determined based on a distance SOSD2 between the light source of the camera assembly and the predetermined point,
• SID represents the source to image distance,
• TDD represents the touch panel to detector distance, and
• γ represents a correction factor.

A non-transitory computer-readable storage medium having instructions stored thereon that, when executed by a processor, cause the processor to determine a touch panel to object distance (TOD) in X-ray imaging by:

• obtaining a three-dimensional image of a to-be-detected subject that comprises an object;
• determining a source to image distance (SID) and a touch panel to detector distance (TDD);
• determining, based on the three-dimensional image, a distance between a light source of a camera assembly that captures the three-dimensional image and a predetermined point located on a surface of the to-be-detected subject;
• determining the TOD based on the SID, the TDD, and the distance between the light source and the predetermined point by evaluating;
• TOD=γ*(SID−TDD−SOSD1), wherein;
• the predetermined point corresponds to an X-ray imagine protocol
• the light source is not part of an X-ray source used for the X-ray imaging,
• the distance SOSDI between the X-ray source and the predetermined point is determined based on a distance SOSD2 between the light source of the camera assembly and the predetermined point,
• SID represents the source to image distance,
• TDD represents the touch panel to detector distance, and
• γ represents a correction factor.