TY - JOUR
T1 - Fundus image mosaicking for information augmentation in computer-assisted slit-lamp imaging
AU - Richa, Rogerio
AU - Linhares, Rodrigo
AU - Comunello, Eros
AU - Von Wangenheim, Aldo
AU - Schnitzler, Jean Yves
AU - Wassmer, Benjamin
AU - Guillemot, Claire
AU - Thuret, Gilles
AU - Gain, Philippe
AU - Hager, Gregory
AU - Taylor, Russell
PY - 2014/6
Y1 - 2014/6
N2 - Laser photocoagulation is currently the standard treatment for sight-threatening diseases worldwide, namely diabetic retinopathy and retinal vein occlusions. The slit lamp biomicroscope is the most commonly used device for this procedure, specially for the treatment of the eye periphery. However, only a small portion of the retina can be visualized through the biomicroscope, complicating the task of localizing and identifying surgical targets, increasing treatment duration and patient discomfort. In order to assist surgeons, we propose a method for creating intraoperative retina maps for view expansion using a slit-lamp device. Based on the mosaicking method described by Richa , 2012, the proposed method is a combination of direct and feature-based methods, suitable for the textured nature of the human retina. In this paper, we describe three major enhancements to the original formulation. The first is a visual tracking method using local illumination compensation to cope with the challenging visualization conditions. The second is an efficient pixel selection scheme for increased computational efficiency. The third is an entropy-based mosaic update method to dynamically improve the retina map during exploration. To evaluate the performance of the proposed method, we conducted several experiments on human subjects with a computer-assisted slit-lamp prototype. We also demonstrate the practical value of the system for photo documentation, diagnosis and intraoperative navigation.
AB - Laser photocoagulation is currently the standard treatment for sight-threatening diseases worldwide, namely diabetic retinopathy and retinal vein occlusions. The slit lamp biomicroscope is the most commonly used device for this procedure, specially for the treatment of the eye periphery. However, only a small portion of the retina can be visualized through the biomicroscope, complicating the task of localizing and identifying surgical targets, increasing treatment duration and patient discomfort. In order to assist surgeons, we propose a method for creating intraoperative retina maps for view expansion using a slit-lamp device. Based on the mosaicking method described by Richa , 2012, the proposed method is a combination of direct and feature-based methods, suitable for the textured nature of the human retina. In this paper, we describe three major enhancements to the original formulation. The first is a visual tracking method using local illumination compensation to cope with the challenging visualization conditions. The second is an efficient pixel selection scheme for increased computational efficiency. The third is an entropy-based mosaic update method to dynamically improve the retina map during exploration. To evaluate the performance of the proposed method, we conducted several experiments on human subjects with a computer-assisted slit-lamp prototype. We also demonstrate the practical value of the system for photo documentation, diagnosis and intraoperative navigation.
KW - Biomicroscope
KW - Fundus
KW - Mosaicking
KW - Slit-lamp
UR - http://www.scopus.com/inward/record.url?scp=84901930524&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901930524&partnerID=8YFLogxK
U2 - 10.1109/TMI.2014.2309440
DO - 10.1109/TMI.2014.2309440
M3 - Article
C2 - 24718569
AN - SCOPUS:84901930524
SN - 0278-0062
VL - 33
SP - 1304
EP - 1312
JO - IEEE transactions on medical imaging
JF - IEEE transactions on medical imaging
IS - 6
M1 - 6754152
ER -