IMAGE RESOLUTION ENHANCEMENT BY USING SWT AND DWT

International Research Journal of Engineering and Technology (IRJET) e ISSN: 2395 0056

Volume: 09 Issue: 06 | Jun 2022 www.irjet.net p ISSN: 2395 0072

IMAGE RESOLUTION ENHANCEMENT

BY USING SWT AND DWT

Ayesha Tamboli1 , Shital Ligade2 , Komal jadhav3 , prof. N. P. Kulkarni4

1 3Final year student, Department of Electronics and Telecommunication Engineering, SVERI, Maharashtra, India

4 Professor. N. P. Kulkarni Department of Electronics and Telecommunication Engineering, SVERI, Maharashtra, India ***

Abstract - WeemployedtheInterpolationtechniquewiththeStationaryWaveletTransform(SWT)andDiscreteWavelet Transform(DWT)toimproveimageresolution.

We get three frequency sub bands by applying DWT to the input image, and we also get three frequency subbands by applyingSWTtotheinputimage.

By applying the Interpolation technique and adding SWT and DWT, we were able to achieve the same input size. As a result,wenowhavethreeseparatefrequencysub bands

ThenwehadtoapplytheInverseDiscreteWaveletTransformtothesub bandstogettheimprovedimage.

Key Words: imageprocessing,resolutionsoftware,matching.

1. INTRODUCTION

Image enhancement is a technique for improving image quality. The major goal of the modification was to improve the image's interpretability by increasing the pixel count. Interpolation of high frequency sub band pictures generated by discretewavelettransformoftheinputimage[4]isusedasanimageresolutionapproach.Thebasicgoalofenhancement is to improve the image's features to improve the quality of the image. Improve the quality We can improve the image quality by employing SWT and DWT, as well as the interpolation technique. We use image enhancement to improve images.Toimproveimagequality,thepixelvaluesmustbeincreased Wewillstartwithimageimprovement.Inthiscase, theimageplaysasignificantinfluence.Wecan'trecognizeanythingwithoutphotographsinourlives.Imageenhancement is a technique for improving image quality. The primary goal of the upgrade is to improve the interpretability of our environment.Imagesareobjectsthatcanholdavarietyofconcepts,colors,details,andeventinformation.Eventhoughthe image isn't perfect, it does have a flaw that not everyone can overcome. It's obvious We can't tell what the picture's objectiveisbecausethere'slessdetail,lessbrightness,andnoiseinit.Asa result,image. Theimageisahighlyimportant objectinthesphereofgeography,industry,medical,andasaresult,developmentisrequired,especiallyatthistime. The amusementDigitalimageprocessingisafieldthatisfrequentlyemployedinlarge scaleinvestigations.Imagecapturedon acomputerprocessinghasmanyalgorithmsandmethodsfortheprocess.Implementationofthealgorithmcanbedoneon theinputimagetobeprocessedfurther.Withthisdigitalimageprocessing,animagewithbadinformationwouldbegreat ifusedindigitalimageenhancement.Tousetheimageenhancement,wemustunderstandwhatiscontainedintheimage of the problem in terms of what underlies us to use the image repair method, whether from detail, color, lighting, and others. Because in image enhancement, not all methods will produce a good image after being processed. Sometimes we initiallywanttoimprovetheimagebutinsteadaggravatetheimage.Imagesarebeingusedinmanyfieldsoneofthemajor issuesoftheimageistheirquality.DWTofasignaltoobtainfoursub bandsiscalculatedbyusingaseriesofhighandlow passfilters(HPFandLPF).[5]

2. LITERATURE SURVEY

Poor lighting conditions or imaging devices with a limited dynamic range might result in low contrast photographs. The methodsproposedareasfollows:

For the dark and bright inputs, a fuzzy rule based technique is used, followed by the use of sigmoid functions. Splitting colorimages into RGBplanesandapplying membershipfunctionsto each plane is the method utilized for enhancement. To distinguish between underexposed and overexposed parts of a picture, an objective function termed exposure is defined.Thepictureisthespatialdomainandthefrequencydomainarethetwodomains.Onlyifthesesatellitephotosare

© 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page2290

International Research Journal of Engineering and Technology (IRJET) e ISSN: 2395 0056

Volume: 09 Issue: 06 | Jun 2022 www.irjet.net p ISSN: 2395 0072

used effectively can they be used effectively. The photographs captured are of great quality, with high resolution pixels, and are free of extrinsic variables such as noise, capturing device defaults, and discreteness. Radiation sources, for example. The number of pixels in a digital image rises as a result of interpolation, and its applications, such as image editing, benefit. Facial reconstruction, resolution enhancement, and multiple description coding Interpolation has been used to improve several approaches. As a result, the application of infrared technology is becoming more and more common as a result of the integration of infrared technology and imaging technology. A great deal. However, due to the limitations of infrared detector performance, the infrared image has low spatial resolution and poor visual quality. The effect however isn't evident in low contrast and detailing as a result, infrared picture contrast and detail enhancement have attracted a lot of attention. The X ray image Since its inception, it has been widely employed in biomedical and medical disciplines. X ray pictures have now become an integral part of the process. in terms of medical diagnosis A medicalX rayimageprovidesalotofinformation,butthedetailsarefuzzyandthecontrastispoor,soit'sdifficulttosee what'sgoingon.

Detrimental consequences on a doctor's decision. As a result, enhancing image contrast and sharpness while reducing sounds are important. The most important aspect of this type of image enhancement detrimental consequences on a doctor'sdecision,asaresult,enhancingimagecontrastandsharpnesswhilereducingsoundsareimportant.

3. METHODOLOGY

WeuseSWTandDWTinterpolationasanimageresolutionenhancementtechnique.First,wemusttakeahigh resolution inputimageanddownsampleitusingDWT.Atthesametime,wemustapplySWTtothesameinputimage,anditwillbe down sampled in three different frequency sub bands, while SWT will give the same frequency sub bands. Finally, we mustapplytheinterpolationtechnique,whichisnothingmorethantheadditionoftheoutputsofSWTandDWT.

4. BLOCK DIAGRAM OF PROPOSED METHOD

Toovercometheissueoflow qualityofimageswehavetousetheabovetechniquetoenhancethequalityofimages Blockdiagramoftheproposedtechnique.

Originalimage

DiscreteWaveletTransform(DWT)

StationaryWaveletTransform(SWT)

Interpolationtechnique

InverseDiscreteWaveletTransform(IDWT)

International Research Journal of Engineering and Technology (IRJET) e ISSN: 2395 0056

Volume: 09 Issue: 06 | Jun 2022 www.irjet.net p ISSN: 2395 0072

Low resolution image SWT

High resolution Image

International Research Journal of Engineering and Technology (IRJET) e ISSN: 2395 0056

Volume: 09 Issue: 06 | Jun 2022 www.irjet.net p ISSN: 2395 0072

5. ALGORITHM

a. Inputalow resolutionimage. b. ApplyDWTandSWTontheinputimage. c. Applybicubicinterpolationwithafactorof2tohigh frequencysub bands d. Addinterpolatedhigh frequencysub bandsofDWTandSWTtechniquetogettheestimatedsub bands e. ApplyIDWTtotheinterpolatedsub bandstogetthehighresolution.

RESULT

Fortesting,we'vetakenthetwostandardphotos(Lena,baboon).Westartedwitha512*512image,thendown sampledit to 128*128 and ended up with a low resolution image. Then, using SWT and DWT, we must increase the resolution to 512*512usingtheinterpolationapproach.ThePSNRratiooftheinputimagemustbecalculated.

PSNR=10log10[255^2/MSE]

Theimage'sPSNRvalueswereincreasedfrom128*128to512*512.

6. CONCLUSION

TheenhancedimageisobtainedbydoingimageresolutionimprovementutilizingtheinterpolationapproachbySWTand DWT.Itimprovestheimagequalityandimprovesvisualquality.TheimageofLenaandthebaboonhasdifferentvalues,as shownintheaboveresult.

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REFERENCES

1. Siva Kumar B, Nagaraj S (2013), “Discrete and Stationary Wavelet Decomposition for Image Resolution Enhancement,” in International Journal of Engineering Trends and Technology (IJETT), Volume 4, Issue 7, Availableat:http://ijettjournal.org/archive/ijett v4i7p123

2. HasanDemirel,GholamrezaAnbarjafari https://www.researchgate.net/publication/224183525_IMAGE_Resolution_Enhancement_by_Using_Discrete_and _Stationary_Wavelet_Decomposition

3. Vartika singh,Gouravkumar,Geetika Aurora. Analytical Evaluation for the enhancement of satellite image using swarm intelligence techniques.2016 International Conference on computing for the sustainable global development

4. HasanDemirel etal.IEEETransImageProcess.2011May.IMAGEresolutionenhancementbyusingdiscreteand stationarywaveletdecompositionhttps://pubmed.ncbi.nlm.nih.gov/20959267/

5. AnbarjafariandH.Demirel,“SATELLITEIMAGERESOLUTIONENHANCEMENTUSINGCWT”IEEEGeoscienceand TheRemoteSensingLetter,vol7,no 1,pp.123to126,Jan2010.

BIOGRAPHIES

Ms AyeshaTambolipursuingaBTechfromSVERICollegeofEngineering, Pandharpur in Electronics and Telecommunication Engineering She has completedanHSCfromDr ChandrabhanuSonvanejrCollege,Ukkadgaon

Ms Shital Ligade pursuing a BTech from SVERIs College of Engineering, Pandharpur in Electronics and Telecommunication Engineering She has completedHSCfromNewEnglishSchoolandJrCollegeKuril.

Ms Komal Jadhav pursuing a BTech from SVERIs College of Engineering, Pandharpur in Electronics and Telecommunication Engineering She has completedHSCDadaPatilMahavidyalayaKarjat.

Ms Neeta Kulkarnireceivedher B.E andM.E degrees inElectronicsand Telecommunication Engineering from SVERIs College of Engineering, Pandharpur. Currently, she is working as an Asst. Professor in SVERIs College of Engineering, Pandharpur. Her research areas are Optical fiber sensors, image processing, satellite communication, and Wireless antennas for satellite applications She is having 10 paper publications in InternationalJournals/Conferences

International Research Journal of Engineering and Technology (IRJET) e ISSN: 2395 0056 Volume: 09 Issue: 06 | Jun 2022 www.irjet.net p ISSN: 2395 0072 © 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page2294