Image-Based Modeling of Plants and Trees (Morgan & Claypool by Sing Bing Kang, Long Quan

By Sing Bing Kang, Long Quan

Crops and timber are one of the most intricate average gadgets. a lot paintings has been performed trying to version them, with various levels of good fortune. during this publication, we evaluation many of the ways in special effects, which we categorize as rule-based, image-based, and sketch-based equipment. We describe our methods for modeling vegetation and bushes utilizing photographs. Image-based methods have the distinctive virtue that the ensuing version inherits the sensible form and complexity of a true plant or tree. We use varied innovations for modeling crops (with rather huge leaves) and timber (with really small leaves).With crops, we version every one leaf from photographs, whereas for timber, the leaves are just approximated because of their small dimension and massive quantity. either innovations commence with an identical preliminary step of constitution from movement on a number of photos of the plant or tree that's to be modeled. For our plant modeling procedure, simply because we have to version the person leaves, those leaves have to be segmented out from the photographs. We designed our plant modeling process to be interactive, automating the method of form restoration whereas hoping on the person to supply uncomplicated tricks on segmentation. Segmentation is played in either picture and 3D areas, permitting the person to simply visualize its influence instantly. utilizing the segmented photo and 3D info, the geometry of every leaf is then immediately recovered from the a number of perspectives by means of becoming a deformable leaf version. Our process additionally permits the consumer to simply reconstruct branches in an analogous demeanour. To version bushes, a result of huge leaf count number, small snapshot footprint, and frequent occlusions, we don't version the leaves precisely as we do for vegetation. in its place, we populate the tree with leaf replicas from segmented resource photographs to reconstruct the final tree form. furthermore, we use the form styles of noticeable branches to foretell these of obscured branches. therefore, we will layout our tree modeling approach for you to reduce consumer intervention. We additionally deal with the unique case of modeling a tree from just a unmarried photograph. right here, the person is needed to attract strokes at the snapshot to point the tree crown (so that the leaf area is nearly recognized) and to refine the restoration of branches. As sooner than, we concatenate the form styles from a library to generate the 3D form. to confirm the effectiveness of our platforms, we exhibit lifelike reconstructions of various crops and bushes from pictures. ultimately, we provide our suggestions on bettering our structures and at the final demanding situations linked to plant and tree modeling. desk of Contents: advent / assessment of Plant and Tree Modeling innovations / Image-Based approach for Modeling crops / Image-Based method for Modeling bushes / unmarried photo Tree Modeling / precis and Concluding comments / Acknowledgments

Show description

Read Online or Download Image-Based Modeling of Plants and Trees (Morgan & Claypool Publishers) PDF

Best plants: botany books

The Handbook of Plant Functional Genomics. Concepts and Protocols

This instruction manual spans over numerous points of present and rising applied sciences within the box. The editors - of the prime specialists in study with a confirmed song list - mix their services to supply a useful reference at the subject. To make it extra inclusive, this moment quantity within the Molecular Plant Biology instruction manual sequence is split into 4 major elements: * Transcriptome research * Gene Silencing, Mutation research, and practical Genomics * Computational research * sensible Genomics and rising applied sciences every one bankruptcy introduces the topic comprehensively, and gives state-of-the paintings experimental protocols.

Practical Plant Identification: Including a Key to Native and Cultivated Flowering Plants in North Temperate Regions

Sensible Plant identity is a necessary advisor to making a choice on flowering plant households (wild or cultivated) within the northern hemisphere. information of plant constitution and terminology accompany sensible keys to spot 318 households into which flowering crops are divided. particularly designed for sensible use, the keys can simply be labored backwards for checking identifications.

Extra info for Image-Based Modeling of Plants and Trees (Morgan & Claypool Publishers)

Example text

3) along the line of sight of the region’s centroid. The 3D location of the leaf is then snapped to the closest pre-computed 3D point or nearest 3D position on the branch. Using branches to create leaves is necessary to make up for the possible lack of pre-computed 3D points (say, due to using a small number of source images). The orientation of the generic leaf model is initially set to be parallel to the source image plane. In the case where more than three pre-computed 3D points project onto a region, SVD is applied to all these points to compute the leaf ’s orientation.

The other challenge is the very dense foliage—dense to the extent that only the trunk is clearly visible. 4(d); our system then automatically produced a very plausible-looking model. About 60% of the reconstructed leaves relied on the recovered branches for placement. 1. 8 shows a medium-sized tree, which was captured with 16 images covering about 135◦ . The branches took 10 minutes to modify, and the leaf segmentation was fully automatic. 8 shows a view not covered by the source images; here, synthesized leaves are shown as well.

Our system responds to user input by immediately updating the graph and image boundaries. 1 GRAPH PARTITION The weighted graph G = {V , E} is built by taking each 3D point as a node and connecting it to its K-nearest neighboring points (K=3) with edges. The K-nearest neighbor is computed using 3D Euclidean distance, and each connecting edge should at least be visible at one view. The weight on each edge reflects the likelihood that the two points being connected belong to the same leaf. 5 by default.

Download PDF sample

Rated 4.02 of 5 – based on 37 votes