Abstract
Purpose
Magnetic resonance imaging (MRI) is a frequently used system in medical imaging and disease interpretation. Most of the time, MRIs in humans show detailed tissue architecture. Low contrast in MRI images is a result of an unfavourable imaging environment. An image's contrast can be increased by employing the straightforward histogram equalization (HE) method. However, HE has numerous disadvantages that make it unsuitable for many applications, such as a significant change in brightness, artificial effects, and over-enhancement.
Methods
This method suggests a new adaptive heuristic HE technique to address these problems. The image's probability distribution function (PDF) is computed first. The maximum and average values of the PDF are used to create an adaptive parameter in the second step. The adaptive parameter is then limited by adding a threshold to the PDF and cumulative distribution function (CDF). Finally, a novel CDF is attained by employing another adaptive parameter discovered by applying the updated CDF. The enhanced image is obtained by combining the new CDF with conventional HE.
Results
The suggested method performs better visually and quantitatively than equated state-of-the-art techniques and is equally effective for low-contrast MRI images. The application of the proposed method was assessed and contrasted using the standard performance measures.
Conclusions
After considerable testing, it was discovered that the suggested method effectively increases visual contrast while retaining the original characteristics of the input photographs and avoiding overly or inadequately improved images.
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Availability of data and material (data transparency)
Not applicable.
Code availability (software application or custom code)
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Acknowledgements
The authors would like to express their gratitude to Dr. Rajnath Singh, Senior Resident, Shri Krishna Medical College and Hospital, Muzaffarpur, Bihar, India, and Dr. Md. Sabit Hussain, Eye Hospital and Research Centre, Motihari, Bihar for their valuable suggestions, guidance and support towards various medical issues related to this proposed method which all are based on their real experiences during their duty in ICUs and wards.
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The authors did not receive support from any organization for the submitted work. No funding was received to assist with the preparation of this manuscript. No funding was received for conducting this study. No funds, grants, or other support was received.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Ravi Kumar and Ashish Kumar Bhandari. The first draft of the manuscript was written by Ravi Kumar and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Kumar, R., Bhandari, A.K. Visibility enhancement of brain tumor affected MRI images using adaptive heuristic process. Health Technol. (2024). https://doi.org/10.1007/s12553-024-00834-x
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DOI: https://doi.org/10.1007/s12553-024-00834-x