Segmentasi Citra Kartu Pias Tipe SO-40U (1400-40S) Pada Perhitungan Lama Penyinaran Matahari

Asih Pujiastuti

Abstract

The measurement of the duration of solar irradiation at the climatology station can be done using campbell stokes and pias cards. The aim of this research is to assist the climatology station operator to determine the burn object on the SO-40U (1400-40S) type of pias cards, making it easier to calculate the duration of solar irradiation. This app is designed and built to successfully segmentation the burn on the card automatically. In this research, the data was collected at a climatology station located in Barongan, Sumberagung Jetis, Bantul. Based on the test conducted segmentation generated in this study is good and produce RMSE number of object result of segmentation equal to 2,6485 to sum object in original image. The difference in object calculation results from a segmentation error caused by a small burning object of the pias card and or a thin but translucent object, so that the object is partially lost or forms an object's separation area.

Keywords

segmentation, Greyscale, Threshold, Noise Remove, image, solar irradiation, RMSE

References

Ariffin., Bahri, S., Sulistiono, R., Haryono, D., Suminarti, N., dan Herlina, N., 2010, Modul Praktikum Klimatologi. Fakultas Pertanian Universitas Brawijaya, Malang.

BMKG, 2006, Peraturan Kepala Badan Meteorologi dan Geofisika no SK/32./TL.202/KB/BMG-2006.

Fan, Q., dan Zhang, Y., 2013, A scorch extraction method for the Campbell-Stokes sunshine recorder based on multivariable thresholding. Imaging Systems and Techniques (IST), IEEE International Conference on, 410 – 414.

Gonzalez, R.C. dan Woods, R.E., 2008, Digital Image processing, Addison- Wesley Publishing Company, USA.

Hamdi, S., 2014, Mengenal Lama Penyinaran Matahari Sebagai Salah Satu Parameter Klimatologi. Berita Dirgantara, 15(1), 7–16.

Horseman, a. M., Richardson, T., Boardman, a. T., Tych, W., Timmis, R., dan MacKenzie, a. R., 2013, Calibrated digital images of Campbell–Stokes recorder card archives for direct solar irradiance studies. Atmospheric Measurement Techniques, 6(5), 1371–1379.

Kuivalainen, M., 2005, Retinal Image Analysis Using Machine Vision, Tesis, Depatement of Information Technology, Lappeenranta University of Technology, Lappeenranta.

Lakitan, B., 1994, Dasar-dasar Klimatologi. Jakarta: PT. Rajagrafindo Persada.

Muhsoni.F.,F. Effendy M, dan Triajie, H.2009. Pemetaan Lokasi Fishing Ground dan Status Pemanfaatan Perikanan di Perairan Selat Madura.Ilmu Kelautan Universitas Trunojoyo Madura.

Pujiastuti, A., Harjoko, A. 2016. Sistem Perhitungan Lama Penyinaran Matahari dengan Metode Otsu Threshold (Study Kasus: St. Klimatologi Barongan),Tesis , Program Studi S2 Ilmu Komputer Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Gadjah Mada Yogyakarta.

Qingming, H., Wen, G., Wenjian, C. (2005), Thresholding Technique with Adaptive Window Selection for Uneven Lighting Image, Pattern Recognation, vol. 26, hal.801-808.

Sanchez-Romero, a., González, J. a., Calbó, J., dan Sanchez-Lorenzo, a., 2014, Using digital image processing to characterize the Campbell–Stokes sunshine recorder and to derive high-temporal resolution direct solar irradiance. Atmospheric Measurement Techniques Discussions, 7(9), 9537–9571.

Strangeways, I. A. N., 2003, Measuring The Natural Environment (2nd ed., p. 548). Cambridge University.

Article Metrics

Abstract view: 137 times
Download     : 56   times

Refbacks

  • There are currently no refbacks.