X-ray diagnosis apparatus and image processing apparatus

An X-ray diagnosis apparatus comprising:

• an image data generating unit (24) that generates X-ray images in a time sequence by detecting an X-ray that is radiated from an X-ray tube (12) and is transmitted through an subject;
• a feature-point-position detecting unit (26a) that detects a position of a feature point included in a predetermined target object from at least a first image and a second image included in the X-ray images generated in a time sequence by the image data generating unit (24);
• an application range determining unit (26c) that determines an application range of a smoothing filter in the first image and the second image based on a position of the feature point in the first image and a position of the feature point in the second image detected by the feature-point-position detecting unit (26a);
• and
• a filtering unit (26d) that performs a smoothing filter process by using the first image and the second image based on the application range of the smoothing filter determined by the application range determining unit (26c).