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Thursday, December 21, 2017

Jurnal IEEE : Hybrid Method using HWT-DCT for Image Watermarking

Astract- This paper proposed a hybrid method that had been solved both of these issues. We proposed a combination of Discrete Cosine Transform (DCT) and Haar Wavelet Transform (HWT) due to achieved imperceptibility and robustness comes from PSNR and NC value. Firstly, HWT applied in host image and then selected subband LL. LL subband will be divided into an 8x8 matrix in which each matrix was applied using DCT. Copyright embedded at the DC coefficient. In this paper we choose PSNR to measure the imperceptibility. Meanwhile, to measure the extracted copyright we used correlation coefficient. The results of this simulation method getting high PSNR value with an average of 43.2392 dB. Experiment results of extraction has tested using image watermarking attacks are JPEG compression, low pass filtering, mid filtering, unsharp filter, gaussian noise, cropingp, blurring, salt and pepper with the average value of the correlation coefficient of 0.8676. Our results proved that HWT-DCT has fulfilled the purpose of image watermarking, namely copyright protection. Keywords─ Haar Wavelet Transform, Discrete Cosine Transform, PSNR, Correlation Coefficient, Image Watermarking

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Saturday, December 16, 2017

Jurnal IBM : IBM PENGELOLAAN DATA KEPENDUDUKAN KELURAHAN KROBOKAN SEMARANG

Abstract

Pengelolaan data kependudukan Kelurahan Krobokan Semarang masih dilakukan secara manual. Pengelolaan secara manual rentan dengan masalah. Data yang disimpan dalam bentuk dokumen memiliki potensi kehilangan data, dan kerusakan. Selain rentan dengan masalah, staf kelurahan sering merasa direpotkan dengan pembuatan laporan bulanan data kependudukan antara lain kelahiran, kematian, perpindahan penduduk dari luar kelurahan atau sebaliknya. Sistem pengelolaan data kependudukan telah diimplementasikan, dan mampu mengakomodasi kebutuhan user. Staf kelurahan menyatakan bahwa sistem yang dibuat mampu mengatasi masalah dan mudah digunakan. Semua tahapan kegiatan berjalan dengan keberhasilan mencapai 100%.

Keywords: sistem informasi, data kependudukan Download PDF atau di sini

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