CAJ | 학술논문

颅脑核磁共振图像( MRI)的肿瘤图像由于自身对比度较低、肿瘤边缘模糊以及肿瘤形状复杂等因素，导致其难以被准确提取。为此，提出将归一化割算法和基于符号压力( SPF)函数的活动轮廓模型相结合，对颅脑MRI肿瘤进行提取的算法。利用基于SPF函数的活动轮廓模型，实现对归一化割算法提取肿瘤边缘的收敛，通过设置收敛的迭代次数和光滑系数完成对颅脑MRI肿瘤边缘的收敛速度和形状的控制，使最终曲线停止于真正的肿瘤边缘。仿真结果表明，该算法克服了肿瘤形状变化及对比度等因素对肿瘤提取的不利影响，能稳定而准确地提取颅脑MRI肿瘤。
로뇌핵자공진도상( MRI)적종류도상유우자신대비도교저、종류변연모호이급종류형상복잡등인소，도치기난이피준학제취。위차，제출장귀일화할산법화기우부호압력( SPF)함수적활동륜곽모형상결합，대로뇌MRI종류진행제취적산법。이용기우SPF함수적활동륜곽모형，실현대귀일화할산법제취종류변연적수렴，통과설치수렴적질대차수화광활계수완성대로뇌MRI종류변연적수렴속도화형상적공제，사최종곡선정지우진정적종류변연。방진결과표명，해산법극복료종류형상변화급대비도등인소대종류제취적불리영향，능은정이준학지제취로뇌MRI종류。
It is difficult to accurately extract the brain tumor,because of the low contrast of brain Magnetic Resonance Image(MRI),the blur tumor edge and complicated brain tumor shape. Order to solve this problem,this paper puts forward the algorithm cmbcaused normalized cut with active contour model based on the slsh wessure Force ( SPF ) function to extract brain MRI tumor. It uses active contour model based on the SPF function to convergent the normalized cut extraction tumor edge,setts the convergence of the iterative number and smooth coefficient to control the MRI tumor edge convergence speed and shape, and makes the tumor edge curve to stop at the real tumor edge. Simulation results show that ths algorithm can overcome the tumor extracting negative impact of tumor shape changing and tumor contrast, and extracts the brain tumor stably and accurately.