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Asymmetric Watermarking Scheme Based on Correlation Testing Rinaldi Munir; Bambang Riyanto; Sarwono Sutikno; Wiseto P. Agung
IJCCS (Indonesian Journal of Computing and Cybernetics Systems) Vol 1, No 2 (2007): July
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijccs.2281

Abstract

AbstractAsymmetric watermarking is the second generation of watermarking scheme which uses different keys for embedding and detecting watermark. Key for embedding is private or secret, but key for detecting can be available publicly and everyone who has the key can detect watermark Watermark detection does not need to be original multimedia data. Detection of watermark is realized using correlation test between public key and multimedia data received. In most of schemes, private key is the watermark itself; public key is public watermark which correlates to the private watermark This paper presents concept of asymmetric watermarking scheme that based on correlation test and reviews some schemes of asymmetric watermarking that have been proposed by researchers.Keywords: asymmetric watermarking, private key, public key, watermark., multimeelia,:correlation.
PEMBANGKIT TEKA-TEKI SILANG DENGAN ALGORITMA BACKTRACKING SERTA APLIKASI PERMAINANNYA YANG BERBASIS WEB Hafni Syaeful Sulun; Rinaldi Munir
Jurnal Informatika Vol 4, No 2: July 2010
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1802.614 KB) | DOI: 10.26555/jifo.v4i2.a5277

Abstract

Teka-teki silang (TTS) merupakan salah satu permainan klasik yang masih populer hingga saat ini dan banyak ditemukan di surat kabar dan buku kumpulan TTS. Walaupun bentuk TTS dari masing-masing penerbit berbeda, ada satu persamaan, yakni bentuk papannya yang memiliki simetri, baik lipat maupun putar, sehingga terlihat menarik dan rapi. Untuk membuatnya secara manual tentu membutuhkan kecermatan karena untuk menentukan satu kata sebagai jawaban harus memperhatikan kata-kata yang terhubung dengannya. Di dalam makalah ini dipaparkan aplikasi pembangkit TTS dan sebuah aplikasi permainan TTS berbasis web yang diberi nama Kata Bersilang. Dengan Kata Bersilang, pembuat TTS (designer) hanya perlu merancang papan TTS, sedangkan jawaban dan pertanyaannya akan dibangkitkan secara otomatis oleh Kata Bersilang dengan algoritma backtracking. Permainan TTS pada Kata Bersilang dibuat mirip dengan permainan TTS yang diterbitkan surat kabar di Indonesia. Penjawab TTS (solver) dapat mengisi TTS yang telah dibuat designer selama masih dalam masa pengisian. Setelah masa tersebut berakhir, akan diumumkan pemenangnya. Kata kunci: pembangkit TTS, permainan TTS, backtracking, Kata Bersilang, designer, solver. 
An Asymmetric Watermarking Method in the DCT Domain Based on RC4-Permutation and Chaotic Map Rinaldi Munir; Bambang Riyanto; Sarwono Sutikno; Wiseto P. Agung
Journal of ICT Research and Applications Vol. 1 No. 2 (2007)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.2007.1.2.1

Abstract

This paper presents an asymmetric watermarking method in the DCT domain for still images based on permutation and chaos. This method uses secret watermark as private key and public watermark as public key. The public watermark has a normal distribution with mean = 0 and variance = 1. The secret watermark is obtained by permutating the public watermark according to combination of a part of RC4 algorithm and a logistic map. The watermark is embedded into mid-frequency components of the DCT block for better robustness. The detection process is implemented by correlation test between the public watermark and the received image. Experiments show that the watermarking method was proved to be robust againts some typical image processings (cropping, JPEG compression, resizing, rotation, sharpening, and noising).
Generic Animation Method for Multi-Objects in IFS Fractal Form Tedjo Darmanto; Iping Supriana; Rinaldi Munir
Journal of ICT Research and Applications Vol. 10 No. 3 (2016)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.res.appl.2016.10.3.1

Abstract

Both non-metamorphic animation and metamorphic animation of objects or multi-objects in IFS fractal form as basic animation method can be implemented by a modified version of the random iteration algorithm as basic algorithm. In this way it is possible to create an attractive animation based on the combination of both animation methods as a generic animation method, as discussed in this paper. The proposed method can be used as an alternative for or as an extension of the existing animation methods in classical geometry, which are restricted to objects with regular forms. The proposed method can be used to produce more attractive media for interactively learning about the behavior of manipulated objects of any form.
Image Captioning menurut Scientific Revolution Kuhn dan Popper Agus Nursikuwagus; Rinaldi Munir; Masayu Leylia Khodra
Jurnal Manajemen Informatika (JAMIKA) Vol 10 No 2 (2020): Jurnal Manajemen Informatika (JAMIKA)
Publisher : Program Studi Manajemen Informatika, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/jamika.v10i2.2630

Abstract

Image captioning is one area in artificial intelligence that elaborates between computer vision and natural language processing. The focus on this process is an architecture neural network that includes many layers to solve the identification object on the image and give the caption. This architecture has a task to display the caption from object detection on one image. This paper explains about the connection between scientific revolution and image captioning. We have conducted the methodology by Kuhn's scientific revolution and relate to Popper's philosophy of science. The result of this paper is that an image captioning is truly science because many improvements from many researchers to find an effective method on the deep learning process. On the philosophy of science, if the phenomena can be falsified, then an image captioning is the science.
Information Retrieval System in the Bible Apriandy Angdresey; Miguel Angelo Lamongi; Rinaldi Munir
CogITo Smart Journal Vol 7, No 1 (2021): Cogito Smart Journal
Publisher : Fakultas Ilmu Komputer, Universitas Klabat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31154/cogito.v7i1.300.111-120

Abstract

Information retrieval is used to search for relevant documents so that they can be obtained quickly and precisely. There are many Christians who want to study the gospel. However, often experience problems in finding the Gospel verse and topics dealing with the need to search by the user. Therefore, have to search individually, each verse in the four Gospels to find the topic or verse that the user wants to find out. In this study, the authors used the Bible verses in the Gospels as documents, so that these verses could be searched for the level of relevance or similarity to the entered keywords. Furthermore, to determine the level of relevance between documents and keywords is calculated using the Vector Space Model. Based on the application that has been successfully built, the application can be show 10 documents related to the keywords that are searched and sorted from the most relevant, with the highest similarity value, namely 78.65%.Keywords - Information Retrieval, Vector Space Model, Bible.
Algoritma Enkripsi Citra Digital Berbasis Chaos dengan Penggabungan Teknik Permutasi dan Teknik Substitusi Menggunakan Arnold Cat Map dan Logistic Map Rinaldi Munir
Jurnal Nasional Pendidikan Teknik Informatika : JANAPATI Vol. 1 No. 3 (2012)
Publisher : Prodi Pendidikan Teknik Informatika Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/janapati.v1i3.9814

Abstract

Di dalam makalah ini dipresentasikan sebuah usulan algoritma enkripsi citra digital yang menggabungkan teknik permutasi dan substitusi. Dua buah chaotic map digunakan untuk masingmasing teknik yaitu Arnold Cat Map dan Logistic Map. Sebelum dienkripsi, pixel-pixel di dalam citra diacak dengan Arnold Cat Map. Selanjutnya, pixel-pixel tersebut diubah nilainya melalui operasi XOR dengan keystream yang dibangkitkan dari Logistic Map. Pixel-pixel dioperasikan seperti mode cipher block chaining. Hasil eksperimen pada citra grayscale dan citra berwarna menunjukkan cipher-image memiliki pixel-pixel yang terdistribusi uniform sehingga menyulitkan serangan dengan analisis statistik. Selain itu pixel-pixel yang berteatngga di dalam cipher-image memiliki koefisien korelasi yang rendah, yang mengindikasikan bahwa pixel-pixel tersebut sudah tidak memiliki hubungan linier (korelasi). Sifat sensitivitas pada chaos telah diperlihatkan yang mengindikasikan algoritma ini aman dari exhaustive-key search attack
Kebenaran dalam Perspektif Filsafat Ilmu Pengetahuan dan Implementasi dalam Data Science dan Machine Leaning Mohamad Idris; Riza Ibnu Adam; Yulrio Brianorman; Rinaldi Munir; Dimitri Mahayana
Jurnal Filsafat Indonesia Vol. 5 No. 2 (2022)
Publisher : Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jfi.v5i2.42207

Abstract

The development of data science or machine learning is experiencing swift growth. This development can become a pseudoscience due to the process of collecting, using algorithms, and processing data that are not per research standards. Machine learning is one of numerous artificial intelligence (AI) techniques that allow a machine to learn independently. Several machine learning implementations include consulting robots, process optimization, credit scoring, security, and services. Data science often uses supervised learning algorithms, which can be trapped intopseudoscience due to errors in the use and processing of data in research. The solution to avoid this is to apply the epistemological concept of Karl Popper, which is related to the falsification ofscience to solve the problem of demarcation. To enhance it, you can also use the principles of the Four Theory of Truth, namely coherence, correspondence, pragmatism, and consensus.
Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos Rinaldi Munir
Jurnal Rekayasa Elektrika Vol 10, No 2 (2012)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v10i2.82

Abstract

This paper presents a selective image encryption in frequency domain. At first, the image is transformed into frequency domain with Discrete Cosine Transform (DCT), and then DCT coefficients are scanned in zigzag, and elements of the low-frequency sub-band are extracted. Encryption is performed only on selected elements by scrambling them using 2D chaos map, namely Arnold Cat Map. Next, IDCT is applied to obtain the encrypted image. The encryption algorithm is included in lossy encryption. Experiments on both grayscale images and color images show that the images can be encrypted succesfully. Histograms of the encrypted images differ significantly from histogram of the original images, and the pixels in the encrypted images are not longer correlated.
Penerapan Pewarnaan Simpul Graf dengan Algoritma Welch Powell dan Algoritma Depth First Search pada Distribusi Giliran Main Angklung Pribadi, Fithratulhay; Munir, Rinaldi
Jurnal CoreIT: Jurnal Hasil Penelitian Ilmu Komputer dan Teknologi Informasi Vol 7, No 2 (2021): Desember 2021
Publisher : Fakultas Sains dan Teknologi, Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (356.276 KB) | DOI: 10.24014/coreit.v7i2.15338

Abstract

Abstrak. Angklung adalah alat musik yang setiap alat musiknya hanya bisa memainkan satu nada saja. Untuk memainkan sebuah lagu dengan angklung, membutuhkan sebuah tim yang masing-masing pemainnya memegang satu atau lebih angklung. Pengaturan giliran memainkan dalam sebuah lagu agar pemain mengetahui ketukan dan nada apa yang harus dimainkannya, dapat disebut pembagian giliran angklung. Pada saat ini, masih sering terjadi gap jumlah turn antar pemain. Untuk mengatasi masalah tersebut, telah dibuat sebuah aplikasi untuk melakukan proses pembagian giliran angklung yang memanfaatkan pewarnaan graf dengan algoritma Welch Powell untuk membagi giliran menjadi kelompok-kelompok dimana tidak ada giliran lain yang dimainkan secara bersamaan (clashing) dan dilanjutkan dengan Algoritma Depth First Search yang akan mengoptimalkan jumlah ketukan di setiap grup. Aplikasi tersebut mampu membuat proses distribusi menjadi lebih efisien dan cukup memuaskan. Namun perbaikan masih diperlukan karena ada beberapa aspek yang belum dijadikan parameter dalam aplikasi.Kata kunci: Angklung, Depth First Search, Pewarnaan Graf. Abstract. Angklung is a musical instrument in which each instrument can only play one note. To play a song with angklung requires a team in which each player holds one or more angklung. Setting the turn to play in a song so that the player knows on what beat and what note he should play can be called the distribution of angklung's turn. At this time, there is still often a gap in the number of turns between players. To overcome this problem, an application has been created to perform the angklung turn distribution process that utilizes graph coloring with the Welch Powell algorithm to divide the turn into groups where there are no other turns to play at the same time (clashing) and continued with Depth First Search algorithm that will optimize the number of beats in each group. The application is able to make the distribution process more efficient and quite satisfying. However, improvements are still needed because there are several aspects that have not been used as parameters in the application.Keywords: Angklung, Depth First Search, Graph Coloring.