Fundus image processing apparatus and fundus observation apparatus

摘要

To provide the status of the cribrosa lamina of an eye of a living body as diagnostic material. A tomographic image forming part 232 of a fundus observing device 1 forms a horizontal tomographic image Wi based on a three-dimensional image V of a fundus Ef. A cribrosa-lamina region specifying part 233 specifies a cribrosa-lamina region Uj by analyzing the horizontal tomographic image Wi. A hole region specifying part 234 specifies a hole region Pk in the cribrosa-lamina region Uj by analyzing the horizontal tomographic image Wi. The distribution information generating part 235 generates distribution information representing the distribution of the hole region Pk in the cribrosa-lamina region Uj based on the specifying results of the cribrosa-lamina region Uj and the hole region Pk. This distribution information is displayed by a display 240.

主权项

1. A fundus image processing apparatus for receiving and processing three-dimensional image representing the morphology of a region of a fundus including the optic disk of an eye, comprising:
a tomographic image forming part that forms a tomographic image representing the morphology of the optic disk based on the three-dimensional image; a first specifying part that analyzes the tomographic image and specifies a cribrosa-lamina region in the tomographic image; a second specifying part that analyzes the tomographic image and specifies a hole region in the cribrosa-lamina region; a generating part that generates distribution information representing the distribution, in the cribrosa-lamina region, of the hole region that are specified by the second specifying part; and a display that displays the distribution information, wherein the tomographic image comprises an image having multiple pixels representing brightness values arrayed in a matrix, and the second specifying part creates a first graph to relate the position of the pixel in each pixel line in the vertical direction and/or the horizontal direction in the tomographic image with the brightness value, obtains a maximal envelope connecting the local maximums of the first graph and a minimal envelope connecting the local minimums of the first graph, obtains a second graph that internally divides the interval between the maximal envelope and the minimal envelope in the direction of a coordinate axis representing the brightness value of the first graph at a predetermined ratio, and specifies a pixel with a smaller brightness value than that of the second graph as a pixel of the hole region.