Cardiovascular OCT image making method and method for detecting stents using thereof

A method for detecting stents using a cardiovascular OCT image which reduces artifacts comprising steps of:

• inputting a cardiovascular OCT image;
• converting coordinates of the inputted OCT image into two-dimensional polar coordinates (θ and r);
• generating a brightness control function of an A-line direction based on a blood wall relative to each θ value;
• forming a brightness image in the A-line direction based on the blood wall and depending on the brightness control function;
• forming an OCT image of which brightness is controlled by the brightness image by applying the brightness image formed on the inputted OCT image;
• and
• detecting stents from the image of which brightness is controlled.

A method for automatically detecting stents using a cardiovascular OCT image which reduces artifacts comprising steps of:

• inputting a cardiovascular OCT image;
• converting coordinates of the inputted OCT image into two-dimensional polar coordinates (θ and r);
• sensing a blood wall boundary of a first two-dimensional plane OCT image from the two-dimensional polar converted image;
• generating a brightness control function of an A-line direction based on the blood wall relative to each θ value;
• forming a brightness image in the A-line direction based on the blood wall and depending on the brightness control function;
• forming an OCT image of which brightness is controlled by the brightness image by applying the brightness image formed on the inputted OCT image;
• detecting stents from the image of which brightness is controlled;
• and
• repeating the above-mentioned steps, which range from the brightness control function generating step to the stent detecting step, to a final two-dimensional plane OCT image.

A method for automatically detecting and displaying stents using a cardiovascular OCT image which reduces artifacts comprising steps of:

• inputting a cardiovascular OCT image;
• converting coordinates of the inputted OCT image into two-dimensional polar coordinates (θ and r);
• sensing a blood wall boundary of a first two-dimensional plane OCT image from the two-dimensional polar converted image;
• generating a brightness control function of an A-line direction based on the blood wall relative to each θ value;
• forming a brightness image in the A-line direction based on the blood wall and depending on the brightness control function;
• forming an OCT image of which brightness is controlled by the brightness image by applying the brightness image formed on the inputted OCT image;
• detecting stents from the image of which brightness is controlled;
• repeating the above-mentioned steps, which range from the brightness control function generating step to the stent detecting step, to a final two-dimensional plane OCT image;
• and
• displaying the detected stents.