Research on information analysis method and application of laser-inducing chlorophyll fluorescence image

HighlightsChlorophyll fluorescence imaging can be used to evaluate chilling injury.Chilling injury area heterogeneity in the L*a*b* color space is significant.Improved k-means++ clustering has a good segmentation effect on chilling injury.Abstract. The application of fluorescence imaging in the detection of tomato chilling injury was investigated. With the segmentation of the chilling injury area serving as the experimental target, an algorithm based on chlorophyll fluorescence image analysis and improved k-means++ clustering was proposed. First, the extraction of lateral heterogeneity values algorithm was used to analyze the horizontal heterogeneity in five color spaces of the fluorescence images of tomato seedling leaves, and it was found that the chilling injury area was significant in the L*a*b* color space. Second, the fluorescence image was converted from the RGB color space to the L*a*b* color space, and the k-means++ algorithm was used to cluster the two-dimensional data of the a*b* space. Third, insertion sorting was used to reorder the different label regions obtained by the k-means++ clustering algorithm, and the region with the largest value was used as the target region. Finally, the binary image of the target region was filtered using a morphological noise filter, and the cold-damaged area was outputted by the mask operation. The results showed that the cold-damaged area was well segmented when the fluorescence imaging contained yellow cold traces. The mean match rate of the proposed algorithm was 37.08%, 13.52%, and 0.96% higher than that based on the HSV model and watershed algorithm, the fuzzy C-means clustering method, and the k-means clustering method, respectively. Similarly, the mean error rate was 13.69%, 5.56%, and 0.16% lower than that based on the HSV model and watershed algorithm, the fuzzy C-means clustering method, and the k-means clustering method, respectively. These findings provide a foundation for research on early warning of chilling injury by identifying the chilling injury status of tomato leaves using a computer vision method. Keywords: Chlorophyll fluorescence, Fluorescence image, Image segmentation, k-Means++.

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ANALYTICAL MAPPING OF REGISTERED CRIMINAL ACTIVITIES IN VILNIUS CITY

Geodesy and Cartography ◽

10.3846/20296991.2012.755343 ◽

2012 ◽

Vol 38 (4) ◽

pp. 134-140 ◽

Cited By ~ 5

Author(s):

Giedrė Beconytė ◽

Agnė Eismontaitė ◽

Denis Romanovas

Keyword(s):

Spatial Analysis ◽

Visual Analysis ◽

Motor Vehicle ◽

Kernel Density ◽

Analysis Method ◽

Information Analysis ◽

Shopping Centres ◽

Street Address ◽

One Year ◽

Spatial Analysis Method

The paper describes the method and the basic results of research into data on criminal activities in Vilnius city. Approximately 100000 incidents registered by police in both 2010 and 2011 have been located and geocoded using their street address information. Analysis of territorial distribution of the incidents in general and of themost common types (assaults, robberies and thefts, motor vehicle thefts and minor offences) in two years reveals that there exist higher concentration areas for all types of crimes. Over one year such areas grew but generally retained their shape and location. The density of incidents is generally dependent on population density, but also tends to concentrate around some shopping centres and entertainment areas. Kernel density spatial analysis method produces visually expressive results and should be applied for fast visual analysis and comparison of data.

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PEMANFAATAN MEDIA FOTO KARIKATUR UNTUK MENAIKKAN KETERAMPILAN MENULIS TEKS ANEKDOT PADA SISWA KELAS X MAN 1 PIDIE

JIRA: Jurnal Inovasi dan Riset Akademik ◽

10.47387/jira.v2i1.77 ◽

2021 ◽

Vol 2 (1) ◽

pp. 107-116

Author(s):

Nanda Saputra ◽

Miswar Saputra

Keyword(s):

Writing Skills ◽

Female Students ◽

Male Students ◽

Analysis Method ◽

Qualitative And Quantitative Analysis ◽

Information Analysis ◽

Research Subjects ◽

Qualitative And Quantitative ◽

Average Value ◽

Field Notes

Riset ini bertujuan untuk mendeskripsikan penerapan pendidikan menulis bacaan anekdot dengan media foto karikatur pada siswa kelas X MAN 1 Pidie serta kenaikan keterampilan menulis bacaan anekdot pada siswa kelas X MAN 1 Pidie sesudah mendapatkan pendidikan dengan media foto karikatur. Riset ini ialah riset aksi kelas (PTK), yang dilaksanakan dalam 3 siklus. Tiap siklus terdiri dari 4 tahapan, ialah perencanaan, penerapan, observasi, serta refleksi. Subyek riset ini merupakan siswa kelas X MAN 1 Pidie dengan jumlah siswa 34 orang yang terdiri dari 15 siswa wanita serta 19 siswa pria. Metode pengumpulan informasi dicoba dengan uji, observasi, serta catatan lapangan. Metode analisis informasi yang digunakan merupakan analisis kualitatif serta kuantitatif. Hasil analisis informasi menampilkan kalau kenaikan keahlian menulis bacaan anekdot pada siswa kelas X MAN 1 Pidie terjalin sesudah memakai media foto karikatur. Perolehan nilai rata- rata pada siklus I: 62, 35%, siklus II: 78, 8%, serta siklus III: 88, 9%. Dengan demikian bisa disimpulkan, pemakaian media foto karikatur dapat meningkatkan keahlian menulis bacaan anekdot, serta guru tetap tingkatkan keahliannya dalam memakai media foto karikatur. Perihal ini nampak dari siklus yang diperoleh siswa pada tiap- tiap siklus. This research aims to describe the application of anecdotal reading writing education using caricature photo media in class X MAN 1 Pidie students and the increase in anecdotal reading writing skills in class X MAN 1 Pidie students after receiving education using caricature photo media. This research is a classroom action research (CAR), which is carried out in 3 cycles. Each cycle consists of 4 stages, namely planning, implementing, observing, and reflecting. The research subjects were students of class X MAN 1 Pidie with a total of 34 students consisting of 15 female students and 19 male students. The method of collecting information was tried by testing, observation, and field notes. The information analysis method used is qualitative and quantitative analysis. The results of the information analysis show that the increase in anecdotal reading writing skills in class X MAN 1 Pidie was intertwined after using caricature photo media. The average value obtained in cycle I: 62, 35%, cycle II: 78, 8%, and cycle III: 88, 9%. Thus, it can be concluded that the use of caricature photo media can improve writing skills for anecdotal reading, and teachers can continue to improve their skills in using caricature photo media. This matter can be seen from the cycle that students get in each cycle.

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