A Parametric Active Polygon for Leaf Segmentation and Shape Estimation

نویسندگان

  • Guillaume Cerutti
  • Laure Tougne
  • Antoine Vacavant
  • Didier Coquin
چکیده

In this paper we present a system for tree leaf segmentation in natural images that combines a first, unrefined segmentation step, with an estimation of descriptors depicting the general shape of a simple leaf. It is based on a light polygonal model, built to represent most of the leaf shapes, that will be deformed to fit the leaf in the image. Avoiding some classic obstacles of active contour models, this approach gives promising results, even on complex natural photographs, and constitutes a solid basis for a leaf recognition process.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Generic Probabilistic Active Shape Model for Organ Segmentation

Probabilistic models are extensively used in medical image segmentation. Most of them employ parametric representations of densities and make idealizing assumptions, e.g., normal distribution of data. Often, such assumptions are inadequate and limit a broader application. We propose here a novel probabilistic active shape model for organ segmentation, which is entirely built upon non-parametric...

متن کامل

Multiscale Shape Priors for 3D Branching Structures in Vasculature Segmentation

In this paper we present a multiscale non-parametric shape model for the segmentation of 3D branching structures such as vasculature or biological neuronal networks. The proposed technique models these structures as surfaces formed by varying-sized interconnected cylinders using higher order active contours. A geometric shape model is built using this approach and incorporated into a surface es...

متن کامل

Active shape model segmentation using a non-linear appearance model: application to 3D AAA segmentation

Active Shape Models (ASM) have proven to be an effective approach for image segmentation. In some applications, however, the linear model of gray level appearance around a contour that is used in ASM is not sufficient for accurate boundary localization. This report concerns one of those applications: segmenting the thrombus in CTA images of abdominal aortic aneurysms (AAA). A non-parametric app...

متن کامل

Active Polygon for Object Tracking

In this paper, we present a technique for object tracking in image sequences, which includes a novel velocity field estimation for vertex locations of a polygon. In this approach, after capturing boundaries of an object by a polygon from the first few frames of the image sequence, both the spatial segmentation and motion segmentation of a polygonal object can be achieved quickly by involving on...

متن کامل

Parametric Shape Processing in Biomedical Imaging

In this thesis, we present a coherent and consistent approach for the estimation of shape and shape attributes from noisy images. As compared to the traditional sequential approach, our scheme is centered on a shape model which drives the feature extraction, shape optimization, and the attribute evaluation modules. In the first section, we deal with the detection of image features that guide th...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011