Zobrazeno 1 - 10
of 122
pro vyhledávání: '"J.A. Marchant"'
Autor:
Christine M. Onyango, J.A. Marchant
Publikováno v:
Computers and Electronics in Agriculture. 39:141-155
Differentiating between crop plants, weeds and soil in digital images is a complex task especially when the crop plants and the weeds have reached an advanced growth stage. Algorithms based on a single feature such as hue or intensity are rarely succ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c570e1914560e444da51204c0afd5e7d
https://doi.org/10.1016/s0168-1699(03)00023-1
https://doi.org/10.1016/s0168-1699(03)00023-1
Publikováno v:
Journal of Agricultural Engineering Research. 69:169-178
The object of the work was to demonstrate individual spot treatment with spray of transplanted cauliflower from a small vehicle that could operate autonomously within a field. The only prior information required was to be the plant spacing, an approx
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06480157af89c2397531075faa06ff37
https://doi.org/10.1006/jaer.1997.0245
https://doi.org/10.1006/jaer.1997.0245
Autor:
J.A. Marchant
Publikováno v:
Computers and Electronics in Agriculture. 15:161-179
This paper is concerned with visual sensing for an autonomous crop protection robot, in particular the problem of finding guidance information from crop row structure. A robust method for finding crop rows in images has been presented in the author's
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d109d60de773170dddddc7df971158f2
https://doi.org/10.1016/0168-1699(96)00014-2
https://doi.org/10.1016/0168-1699(96)00014-2
Autor:
J.A. Marchant, R. Brivot
Publikováno v:
Acta Horticulturae. :165-172
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98c2ad0a17e2814d64a2ad6e17898aa9
https://doi.org/10.17660/actahortic.1996.406.16
https://doi.org/10.17660/actahortic.1996.406.16
Publikováno v:
Aquacultural Engineering. 14:155-173
We describe and discuss a non-invasive 3D measurement technology based on optical stereoscopy and computer image analysis for continuous monitoring of size, position, shape, and spatial orientation of single fish in cages containing many fish. We pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96b62e620799cf1b6b772cec05076fd3
https://doi.org/10.1016/0144-8609(94)p4433-c
https://doi.org/10.1016/0144-8609(94)p4433-c
Autor:
J.A. Marchant, R.D. Tillett
Publikováno v:
Mechatronics. 4:281-293
This paper reports some of the work done under a LINK (Design of High Speed Machinery Programme) project aimed at increasing the speed of produce grading. The computer platform was a transputer network with two special purpose hardware units and this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f70ab6c023e131f1d5f843fed655121e
https://doi.org/10.1016/0957-4158(94)90005-1
https://doi.org/10.1016/0957-4158(94)90005-1
Autor:
C.M. Onyango, J.A. Marchant
Publikováno v:
Food Control. 5:29-32
The need for high quality vegetable produce has led to the use of increasingly sophisticated equipment for grading and sorting. High speed image analysis systems have been developed at the Silsoe Research Institute which can grade produce at the rate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1ca1d0c83f8d1998470f3a1b235a6c6
https://doi.org/10.1016/0956-7135(94)90130-9
https://doi.org/10.1016/0956-7135(94)90130-9
Autor:
J.A. Marchant, P.F. Davis
Publikováno v:
Computers and Electronics in Agriculture. 8:277-292
In an earlier paper the application of the ‘snake’-active contour method to the processing of pig images was described. It enabled touching and overlapping images of neighbouring pigs in a pen to be extracted from each other in many of the cases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d8ac6d62f65bb2a9dde666e2b528854
https://doi.org/10.1016/0168-1699(93)90016-t
https://doi.org/10.1016/0168-1699(93)90016-t
Autor:
J.A. Marchant, C.P. Schofield
Publikováno v:
Computers and Electronics in Agriculture. 8:261-275
Images containing animals are often difficult to process automatically because poor and variable lighting, shadows, and overlapping and touching animals lead to indistinct or incomplete boundaries. A snake is an algorithm based on the mechanics of an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8e71f28e7bf88d64aa2ceee56d7dc02
https://doi.org/10.1016/0168-1699(93)90015-s
https://doi.org/10.1016/0168-1699(93)90015-s
Autor:
J.A. Marchant
Publikováno v:
Mechatronics. 1:11-18
This paper reviews the relationship between mechatronics and agricultural engineering. Particular characteristics of engineering in an agricultural environment are considered with regard to potential mechatronic approaches. These characteristics are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::365f9c9161f26788b067cb81c8a45038
https://doi.org/10.1016/0957-4158(91)90004-t
https://doi.org/10.1016/0957-4158(91)90004-t