Abstract— 

Cancer is an irregular extension of cells and one of the regular diseases in India which has lead to 0.3 deaths every year. It may take any forms and is very difficult to detect during early stages. Getting a clear cut classification from a biopsy image is inconvenient task as the pathologist must know the detailed features of a normal and the affected cells. Manual identification of cancerous cells from the microscopic biopsy images is time consuming and requires good expertise. This paper presents an overview of the method that proposes the detection of breast cancer with microscopic biopsy images. It focuses on image analysis and machine learning. 

INTRODUCTION

Cancer is one of the most serious health problems in the world. It occurs in different forms depending on the cell of origin, location and familial alterations. This disease is completely enveloped the world due to change in habits in the people such as increase in use of tobacco, degradation of dietary habits, lack of activities, and many more. Curing this disease has become bit easy compared to early days due to advancement in medicines. Basically, malignancy level helps to decide the type of cancer treatment to be followed. Detection of Cancer often involves radiological imaging. Radiological Imaging is used to check the spread of cancer and progress of treatment. It is also used to monitor cancer. Oncological imaging is continually becoming more varied and accurate. Different imaging techniques aim to find the most suitable treatment option for each patient. Imaging techniques are often used in combination to obtain sufficient information. Detection of cancer has always been a major issue for the pathologists and medical practitioners for diagnosis and treatment planning. Identifying cancer from microscopic biopsy images is subjective in nature and may vary from expert to expert depending on their expertise and other factors which include lack of specific and accurate quantitative measures to classify the biopsy images as normal or cancerous one.

LITERATURE SURVEY

Early works in this field involves classification of histopathology images where they have used computer aided disease diagnosis (CAD) for detection. Automated cancer detection models are used which uses various parameters like area of interest, variance of information (VOI), false error rate and so on to get accurate values. Magnetic Resonance Images (MRI) are used as a sample image and the detection is carried out using K-Nearest Neighbor (KNN) and Linear Discriminate Analysis (LDA). Thermographs and mammograms are also taken as sample which uses support machine vectors (SVM).

PROPOSED WORK

Detecting cancer is a multistage process. Often, patients go to doctor because of some symptom or the other. Sometimes cancer is discovered by chance or from screening. The first stage starts with taking a collection of Microscopic biopsy images. All the images undergo several preprocessing tasks such as noise removal and enhancement. 

The dataset is divided into Training data and testing data. There are also two phases, training and testing phases.

• Understanding the relation between data and attributes is done in training phase. The data samples are given for system which extracts certain features. Based on these extracted features a model is built. A classifier is used which classifies all the given samples to train the model.

• In testing phase, the images are provided and the same features encountered during training phase are extracted.

• The new images are compared and classified depending on color, shape, arrangement. At this point the images are detected and they are shown as positive or negative.

• The positive result depicts, the cells are cancerous and the negative result depicts that the cells are noncancerous.

IMPLEMENTATION

Implementation has two phases:

a) Image Processing b) Machine Learning

In Image Processing module it takes the images as input and is loaded into the program. This image is chopped into 12 segments and CNN (Convolution Neural Networks) is applied for each segment. There are four options given to the program which is given below:

• Benign cancer

• Insitu Cancer

• Invasive Cancer

• Normal The CNN extracts the percent of each type of Cancer cell present in each segment. After extraction it takes the average of the 12 parts and that output will be stored to another file which acts as the intermediate output, this file is further given to the Machine learning for the prediction.

In Machine learning has two phases, training and testing. In training phase, the intermediate result generated is taken from Image processing part and Naive Bayes theorem is applied. Naive Bayes algorithm will be trained with such type of data and it provides the results shown below as positive or negative.

RESULTS

Intermediate Outputs: a. Calculate the cancer rate (percentage) from each segment.

b. Average of all the segments is written to the file.

CONCLUSION

In this paper, an automated detection and classification methods were presented for detection of cancer from microscopic biopsy images. A microscopic biopsy images will be loaded from file in program. By using Image processing images are read and segmented using CNN algorithm. Machine learning is used to train and test the images. It tests the images and it gives result as positive or negative. This method takes less time and also predicts right results.

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