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Articles

WATER STRESS ESTIMATION OF TOMATO CANOPY BASED ON MACHINE VISION

Article number

440_68

Pages

389 – 394

Language

Abstract

A machine vision algorithm for estimating water potential of a tomato canopy was developed.
The algorithm extracted lines reflecting inclinations of rachises of tomato plants from the whole canopy image obtained from a fixed position slightly above the canopy.
The average incline of the extracted lines correlated well with water potential of tomato plants.
This algorithm can be implemented in an automated irrigation system.

Publication

International Symposium on Plant Production in Closed Ecosystems

Authors

K. Kurata, J. Yan

Keywords

automation, irrigation, Lycopersicon esculentum Mill., machine vision, tomato, water potential

Full text

https://doi.org/10.17660/ActaHortic.1996.440.68

Online Articles (117)

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T. Yanagi | K. Okamoto | S. Takita

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O. Monje | B. Bugbee

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28. DESIGN OF A WIND TUNNEL FOR PLUG SEEDLINGS PRODUCTION UNDER ARTIFICIAL LIGHTING

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29. THE PURSUIT OF OPTIMUM ENVIRONMENTS IN AUSTRALIAN GREENHOUSES

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S.C. Mohapatra | C.W. Suggs | Y. Kitaya

31. AN ANALYSIS OF CROP GROWTH UNDER PLASTIC FILMS WITH DIFFERENT LONG-WAVE RADIATION TRANSMITTANCE

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33. SIMULATION OF LIGHT ENVIRONMENT WITH FLUORESCENT LAMPS AND DESIGN OF A MOVABLE LIGHT MOUNTING FIXTURE IN A GROWING ROOM

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34. GREENHOUSE SPINACH PRODUCTION IN A NFT SYSTEM

A.J. Both | A.R. Leed | E. Goto | L.D. Albright | R.W. Langhans

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37. EFFECT OF DISSOLVED OXYGEN CONCENTRATION ON LETTUCE GROWTH IN FLOATING HYDROPONICS

E. Goto | A.J. Both | L.D. Albright | R.W. Langhans | A.R. Leed

38. DYNAMICS OF FRUIT GROWTH AND WATER RELATIONS IN TOMATO PLANTS (LYCOPERSICON ESCULENTUM MILL.) AS AFFECTED BY ROOT WATER CONDITION

M. Kitano | H. Eguchi

39. THE CONTROL OF CHEMICAL COMPONENTS OF THE NUTRIENT SOLUTION IN HYDROPONICS WITH NANOFILTRATION MEMBRANE

T. Ohtani | S. Sase | L. Okushima

40. ENHANCEMENT OF ASPARAGUS SEEDLING GROWTH THROUGH ARBUSCULAR MYCORRHIZAL FUNGUS INOCULATION

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41. NUTRIENT SOLUTION COOLING AND ITS EFFECT ON TEMPERATURE OF LEAF LETTUCE IN HYDROPONIC SYSTEM

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A. Nakano | Y. Uehara

43. INVESTIGATION OF THE EFFECTS OF PEROXYACETYL NITRATE (PAN) ON PLANTS

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47. FORCING CULTURE OF FREESIA AND DUTCH IRIS USING SPOT COOLING SYSTEM

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S.G. LEE | H.W. LEE

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S. Takita | K. Okamoto | T. Yanagi

52. THE INFLUENCE OF SPECTRAL COMPOSITION ON GROWTH AND DEVELOPMENT OF CHRYSANTHEMUM PLANTS

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53. ROSE FACTORY DESIGN

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54. SIMULATION OF THERMAL ENVIRONMENT IN PLANT FACTORY BY USING MATHEMATICAL MANIPULATION SYSTEM

T. Honjo | T. Mitani

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56. DESIGN OF AN ACCLIMATION SYSTEM CAPABLE OF CONTROLLING CARBON DIOXIDE CONCENTRATION

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57. USE OF COMPUTATIONAL FLOW DYNAMICS CODE FOR MODELING THE BEHAVIOUR OF AIRBORNE DUST ON THE SURFACE OF SOLAR CELL FOR MAXIMIZING SOLAR ENERGY FOR CONTROLLED ENVIRONMENT

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T. Higashide | H. Shimaji | M. Takaichi

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M.Y. Roh | Y.B. Lee

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K. Amimoto | H. Fukui

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J.E. Son

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A. Nukaya | H. Hashimoto | H. Kunimatsu

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Y.H. Kim | T. Kozai | C. Kubota | Y. Kitaya

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Th.H. Gieling | E.J. van Henten | E.A. van Os | O. Sakaue | A.T.M. Hendrix

65. EFFECT OF POTASSIUM AND CALCIUM CONCENTRATION IN THE NUTRIENT SOLUTION ON GROWTH AND NUTRIENT UPTAKE OF ROSE PLANTS.

M. Terada | T. Goto | Y. Kageyama | K. Konishi

66. EFFECT OF BLUE AND RED LIGHT INTENSITY ON PHOTOSYNTHETIC RATE OF STRAWBERRY LEAVES

T. Yanagi | K. Okamoto | S. Takita

67. AN AUTOMATED PLANT MONITORING SYSTEM USING MACHINE VISION

G.A. Giacomelli | P.P. Ling | R.E. Morden

68. VISUAL SENSING ALGORITHM FOR CHRYSANTHEMUM CUTTING STICKING ROBOT SYSTEM

N. Kondo | Y. Ogawa | M. Monta | Y. Shibano

69. WATER STRESS ESTIMATION OF TOMATO CANOPY BASED ON MACHINE VISION

K. Kurata | J. Yan

70. NEURAL NETWORK EVALUATION OF CHARGE SIMULATION RETINA FOR 3-D IMAGE ACQUISITION AND PROCESSING

C. Kanali | H. Murase | Y. Nishiura | H. Takigawa | N. Honami

71. FINITE ELEMENT RETINA FOR PLANT GROWTH MONITORING

H. Murase | Y. Nishiura

72. CHILLING EFFECTS FOR NORMAL GROWTH OF TULIP BULBS ESTIMATED BY MRI

M. Iwaya-Inoue | K. Motooka | N. Ishida | M. Koizumi | H. Kano

73. MONITORING OF THE CHANGE IN FRESH WEIGHT OF PLANTS GROWN IN WATER CULTURE

M. Takaichi | H. Shimaji | T. Higashide

74. DETERMINING THE RATE OF WILTING OF A GRAFTED SEEDLING IN AN ACCLIMATION PROCESS USING A MACHINE VISION SYSTEM

Y. Nishiura | H. Murase | N. Honami | T. Taira | A. Wadano

75. MACHINE VISION SYSTEM FOR MEASUREMENT OF THE RATE OF JOINING OF GRAFTED SEEDLINGS

76. DIFFERENTIATION OF SPINACH PLANT (SPINACIA OLERACEA L.) DEVELOPMENT USING LASER INDUCED FLUORESCENCE (LIF)

J. Norikane | T. Takakura | H. Tsuchiya | A. Yamazaki

77. QUANTIFICATION OF LIGHTING SPECTRAL QUALITY EFFECT ON LETTUCE DEVELOPMENT USING MACHINE VISION

S. Sase | P.P. Ling

78. MEASUREMENT OF LEAF TEMPERATURE ON PLANTS AT STEADY-STATE

H. Hedlund | O. Hellgren

79. GENERALIZED SYSTEM FOR PLANT GROWTH ANALYSIS USING INFRARED LED

H. Shimizu | M. Yamazaki

80. DYNAMIC STATE OF WATER CHARACTERIZED BY ¹H-NMR RELAXATION TIMES (T₁) AND SPECTRA FOR PRE-CHILLED TULIP PLANTS IN GROWTH AND DEVELOPMENTAL STAGE

G. Watanabe | M. Iwaya-Inoue | A.H. Molla | K. Matsui

81. APPLICATION OF SYSTEM IDENTIFICATION TO DIAGNOSIS OF RECOVERY OF ROOT FROM TRANSPLANTING INJURY

T. Torii | T. Okamoto | T. Mukai

82. DEVELOPMENT OF PHOTOSYNTHESIS AND RESPIRATION MEASUREMENT SYSTEM USING MASS SPECTROMETRY

E. Goto | T. Takakura | N. Okamura | I. Nishi | J. Futami

83. TEXTURAL FEATURES-BASED NEURAL NETWORK MODEL VS. SOIL COVERAGE MODEL FOR BETTER ADAPTABILITY IN NON-DESTRUCTIVE GROWTH MEASUREMENT OF PLUG SEEDLINGS COMMUNITY

T. Suzuki | H. Murase | Y. Nishiura | H. Takigawa | N. Honami

84. DEVELOPMENT OF A GRIPPER FOR A PLUG-IN GRAFTING ROBOT SYSTEM

Y. Nishiura | H. Murase | N. Honami | T. Taira | A. Wadano

85. NEURAL NETWORK INVERSE ANALYSIS FOR PLANT THERMAL BEHAVIOR

. | H. Murase | N. Honami

86. DISCRIMINATING AND CONTINUOUS MEASUREMENT OF PHOTOSYNTHESIS AND RESPIRATION BY MONITORING ¹³CO₂ AND ¹²CO₂ AS TRACERS

87. SERIAL HARVEST – A SYSTEM TO ENHANCE CARROT (DAUCUS CAROTA) SOMATIC EMBRYO CULTURE PRODUCTIVITY

H. Liyanage | K. Kurata

88. SEVERAL FACTORS AFFECTING BULBLET REGENERATION FROM THE CULTURE OF SCALE SEGMENT AND NODE-BUD IN FRITILLARY AS MEDICINAL BULBOUS PLANT

K.Y. Paek | N.S. Sung | C.H. Park

89. EFFECTS OF COLD PRETREATMENT, CARBOHYDRATE SOURCE AND GELLING AGENTS ON SOMATIC EMBRYOGENESIS FROM ANTHERS OF VITIS VINIFERA L. CVS. ‘REGINA’ AND ‘REICHENSTEINER’

Z.M. Bensaad | M.J. Hennerty | T.D. Roche

90. GROWTH OF GERBERA HYBRIDA IN VITRO AS AFFECTED BY CO₂ CONCENTRATION AND AIR EXCHANGE RATE OF THE VESSEL

B.R. Jeong | C.S. Yang | J.C. Park

91. COMMERCIAL-SCALE PHOTO-AUTOTROPHIC MICROPROPAGATION: APPLICATIONS IN IRISH AGRICULTURE, HORTICULTURE AND FORESTRY

T.D. Roche | R.D. Long | A.J. Sayegh | M.J. Hennerty

92. SIMPLE APPARATUS TO PERFORM PLANT TISSUE CULTURE BY TEMPORARY IMMERSION

93. A NEW METHOD ON MASS-PRODUCTION OF MICROPROPAGATED CHRYSANTHEMUM PLANTS USING MICROPONIC SYSTEM IN PLANT FACTORY

E.J. Hahn | Y.B. Lee | C.H. Ahn

94. MASS PROPAGATION OF POTATO MICROTUBERS IN JAR FERMENTORS

M. Hulscher | H.T. Krijgsheld | E. Jongedijk

95. STEM ELONGATION AND GROWTH OF MENTHA ROTUNDIFOLIA IN VITRO AS INFLUENCED BY PHOTOPERIOD, PHOTOSYNTHETIC PHOTON FLUX, AND DIFFERENCE BETWEEN DAY AND NIGHT TEMPERATURES

B.R. Jeong | T. Kozai | K. Watanabe

96. QUALITATIVE ANALYSIS OF LIQUID MOVEMENT WITHIN SHAKE CULTURE FLASKS USING A FLOW VISUALIZATION TECHNIQUE

K. Kurata | H. Mita

97. RELATIONSHIP BETWEEN SHAPE OF CARROT SOMATIC EMBRYOS AND THEIR GROWTH AND DEVELOPMENT

Y. Ibaraki | T. Shimazu | K. Kurata

98. DEVELOPMENT OF A SYSTEM FOR MASS PROPAGATION OF COLOCASIA ESCULENTA IN LARGE SCALE WITHOUT FORCED AERATION

M. Akita | Y. Ohta

99. EFFECTS OF CO₂ CONCENTRATION, PPFD AND SUCROSE CONCENTRATION ON CYMBIDIUM PLANTLET GROWTH IN VITRO

J.W. Heo | C. Kubota | T. Kozai

100. OPTIMIZATION OF PHOTOAUTOTROPHIC MICROPROPAGATION CONDITIONS FOR SWEETPOTATO (IPOMOEA BATATAS (L.) LAM.) PLANTLETS

T. Kozai | Y. Kitaya | C. Kubota | R. Kobayashi | S. Watanabe

101. EFFECT OF IN VITRO STORAGE CONDITIONS ON THE CONSUMPTION OF THE NUTRITIONAL CONTENTS AND THE VIABILITY OF LILIUM BULB-SCALE

T. Yoshihara | F. Goto

102. IN VITRO PROPAGATION OF HOSTA USING CULTURED SHOOT TIPS AND SOMACLONAL VARIABILITY OF REGENERANTS

K.Y. Paek | S.H. Ma

103. RAPID REGENERATION THROUGH OVARY CULTURE IN ALLIUM VICTORIALIS L. SSP. PLATYPHYLLUM HULT.

104. GASEOUS AND MEDIA-RELATED FACTORS INFLUENCING IN VITRO MORPHOGENESIS OF JERUSALEM ARTICHOKE (HELIANTHUS TUBEROSUS) ‘NAHODKA’ NODE CULTURES

T.D. Roche | A.C. Cassells

105. NEGATIVE PRESSURE IN THE APOPLAST OF ELONGATING TISSUE INDUCES WATER UPTAKE FOR CELL ELONGATION IN TISSUE-CULTURED PLANTS

H. Nonami | Y. Hashimoto

106. EFFECT OF CO₂ ENRICHMENT AND SUGAR-FREE MEDIUM ON SURVIVAL AND GROWTH OF TURFGRASS REGENERANTS GROWN IN VITRO

Y. Seko | T. Kozai

107. EFFECTS OF MAGNETIC FLUX DENSITY AND DIRECTION OF THE MAGNETIC FIELD ON GROWTH AND CO₂ EXCHANGE RATE OF POTATO PLANTLETS IN VITRO

M. Iimoto | K. Watanabe | K. Fujiwara

108. PHOTOAUTOTROPHIC GROWTH OF DIANTHUS CARYOPHYLLUS IN VITRO AS AFFECTED BY PHOTOSYNTHETIC PHOTON FLUX AND CO₂ CONCENTRATION

B.R. Jeong | C.S. Yang | E.J. Lee

109. RAPID ACCLIMATIZATION OF IN-VITRO EUCALYPTUS PLANTLETS BY CONTROLLING RELATIVE HUMIDITY EX VITRO

C. Kirdmanee | T. Kozai | J. Adelberg

110. SIMULATION OF THE EFFECTS OF PHOTOPERIOD AND LIGHT INTENSITY ON THE GROWTH OF POTATO PLANTLETS CULTURED PHOTOAUTOTROPHICALLY IN VITRO

G. Niu | T. Kozai | H. Mikami

111. THE EFFECTS OF ROOT MEDIA AND CO₂ ON ACCLIMATIZATION AND GROWTH OF MICROCUTTINGS OF ANTHURIUM, DIEFFENBACHIA, HOMALOMENA AND SPATHIPHYLLUM

B. Matysiak | J. Nowak

112. AN ASSESSMENT OF THE CONDITIONS FOR THE RAPID PROPAGATION OF IMPATIENS FLANAGANAE IN-VIVO AND IN-VITRO

R.V. Nikolova | N. Lall | A.J.N. Bosa

113. CONTRIBUTION OF RICE IN A TETRALEMMA

N. Ito

114. K PROJECT :PRODUCTION OF FOOD BY BIOLOGICAL FIXATION OF CO₂

J. Kondo | I. Aiga | Y. Nakano | K. Miyatake

115. THE PH-BUFFER ACTION OF WATER TREATED WITH SILICATE MINERALS

H. Nakamura | K. Ishikawa | Y. Okada | Y. Gejima

116. EXTENSION OF VASE LIFE OF CUT CARNATIONS BY STRUCTURED WATER

S. Oshita | Y. Seo | Y. Kawagoe | K. Koreeda | K. Nakamura

117. PROPERTIES OF WATER TREATED WITH GRANULAR CERAMICS AND ITS EFFECT ON PLANT GROWTH

K. Ishikawa | R. Tamura | J. Miyawaki | K. Tanabe