A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)

Image fusion is a process that combines information from multiple images of the same scene into a single image. In this study, a new image fusion technique is proposed using the Discrete Cosine Transform (DCT). Each of the source images may represent a partial view of the scene, and contains both ‘r...

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التفاصيل البيبلوغرافية
المؤلف الرئيسي:	Waheed, Safa Riyadh
التنسيق:	أطروحة
اللغة:	English
منشور في:	2014
الموضوعات:	TK Electrical engineering Electronics Nuclear engineering
الوصول للمادة أونلاين:	http://eprints.utm.my/id/eprint/41580/1/SafaRiyadhWaheedMFSKSM2014.pdf
الوسوم:	إضافة وسم لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!

id	my-utm-ep.41580
record_format	uketd_dc
spelling	my-utm-ep.415802017-09-11T06:49:57Z A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT) 2014-01 Waheed, Safa Riyadh TK Electrical engineering. Electronics Nuclear engineering Image fusion is a process that combines information from multiple images of the same scene into a single image. In this study, a new image fusion technique is proposed using the Discrete Cosine Transform (DCT). Each of the source images may represent a partial view of the scene, and contains both ‘relevant’ and ‘irrelevant’ data. Sincethe target ofimage fusion technique is to combine the source images into a single composite image which contains a more accurate description of the scene than any of the individual sources. Moreover, the fused image has gotten the best possible quality without introduction of distortion or loss of information. DCT algorithm is considered efficient in image fusion. The proposed scheme is performed in five steps: (1) RGB colour image (input image) is split into three channels R, G, and B for both images.(2) DCT algorithm is applied to each channel (R, G and B) for image1 and image2 respectively. (3) The variance values are computed for the corresponding 8x8 blocks of each channel. (4) Each block of R (image 1) is compared with each block of R (image2) based on the variance value and then the block having maximum variance value is selected to be the block in the new image. This process is repeated for all channels of image1 and image 2. (5) Inverse discrete cosine transform (IDCT) is applied on each fused channel to convert it from coefficient values to pixel values, and then combined all the channels to generate the fused image. The proposed technique can potentially solve the problem of undesirable side effects like blurring or blocking artifacts from reducing the quality of the resultant image in image fusion.The proposed approach is evaluated using three measurement units: the average of Qabf, standard deviation and peak Signal Noise Rate (PSNR). The experimental results of this proposed technique achieved good results as compared to previous studies. 2014-01 Thesis http://eprints.utm.my/id/eprint/41580/ http://eprints.utm.my/id/eprint/41580/1/SafaRiyadhWaheedMFSKSM2014.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Computing Faculty of Computing
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Waheed, Safa Riyadh A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)
description	Image fusion is a process that combines information from multiple images of the same scene into a single image. In this study, a new image fusion technique is proposed using the Discrete Cosine Transform (DCT). Each of the source images may represent a partial view of the scene, and contains both ‘relevant’ and ‘irrelevant’ data. Sincethe target ofimage fusion technique is to combine the source images into a single composite image which contains a more accurate description of the scene than any of the individual sources. Moreover, the fused image has gotten the best possible quality without introduction of distortion or loss of information. DCT algorithm is considered efficient in image fusion. The proposed scheme is performed in five steps: (1) RGB colour image (input image) is split into three channels R, G, and B for both images.(2) DCT algorithm is applied to each channel (R, G and B) for image1 and image2 respectively. (3) The variance values are computed for the corresponding 8x8 blocks of each channel. (4) Each block of R (image 1) is compared with each block of R (image2) based on the variance value and then the block having maximum variance value is selected to be the block in the new image. This process is repeated for all channels of image1 and image 2. (5) Inverse discrete cosine transform (IDCT) is applied on each fused channel to convert it from coefficient values to pixel values, and then combined all the channels to generate the fused image. The proposed technique can potentially solve the problem of undesirable side effects like blurring or blocking artifacts from reducing the quality of the resultant image in image fusion.The proposed approach is evaluated using three measurement units: the average of Qabf, standard deviation and peak Signal Noise Rate (PSNR). The experimental results of this proposed technique achieved good results as compared to previous studies.
format	Thesis
qualification_level	Master's degree
author	Waheed, Safa Riyadh
author_facet	Waheed, Safa Riyadh
author_sort	Waheed, Safa Riyadh
title	A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)
title_short	A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)
title_full	A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)
title_fullStr	A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)
title_full_unstemmed	A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)
title_sort	multi-focus image fusion technique for rgb color images using discrete cosine transform (dct)
granting_institution	Universiti Teknologi Malaysia, Faculty of Computing
granting_department	Faculty of Computing
publishDate	2014
url	http://eprints.utm.my/id/eprint/41580/1/SafaRiyadhWaheedMFSKSM2014.pdf
_version_	1747816575304466432

A multi-focus image fusion technique for RGB color images using discrete cosine transform (DCT)

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