디스플레이 주변의 조도 환경 변화에 따라 인지되는 영상의 시인성이 달라지게 된다. 특히, 높은 조도 환경 에서는 영상의 인지 contrast가 저하되고, 어두운 영역의 detail이 손실되는 문제가 발생한다. 본 논문에서는 높은 조 도에서 인지되는 영상의 시인성을 향상시키기 위해 어두운 영역의 detail 보상을 고려한 contrast 개선 알고리즘을 제 안한다. 영상의 contrast 개선을 위해 TMF(Tone Mapping Function)를 사용하며, TMF는 영상 특성 및 주변 조도에 따라 적응적으로 도출된다. 제안하는 contrast 개선 방법의 성능을 평가하기 위해 원본, 제안하는 방법과 기존 방법의 결과들을 대상으로 성능 비교를 위한 시각 실험을 수행한다. 실험 결과 제안하는 방법을 적용한 영상의 시인성이 원 본 및 기존 방법에 비해 향상된 것을 확인하였다.

The association of colorectal cancer with ulcerative colitis (UC) is well-recognized. However, not much is known regarding the increased risk of extra-intestinal malignancies with UC. Several studies have revealed that patients with UC are at in-creased risk of hepatobiliary cancer, nonmelanoma skin cancer, and myeloid leukemia. A 41-year-old man was diagnosed with UC in 1993 and had three relapses over the next three years. Six months after the fourth remission, he developed pan-cytopenia and was diagnosed with acute promyelocytic leukemia (APL). He achieved complete remissions of APL through chemotherapies, and, since then, no recurrences of APL and UC were observed.

In adults, the complications of measles are more fatal and the viremia lasts longer than in children. Reports on severe forms of measles in adults are rare and no cases of elderly adults who experienced multiple organ failure in Korea have been reported. A 68-year-old man with a rash, fever, cough, and conjunctivitis was admitted to our hospital and confirmed by positive expression of specific IgM antibody to measles. The patient experienced acute kidney injury and acute lung injury requiring renal replacement therapy and mechanical ventilation. Herein, we report on a rare case of measles showing multiple organ failure in an elderly adult.

Idiopathic spontaneous intraperitoneal hemorrhage is a rare, often fatal condition; however, the patients present with nonspecific symptoms. Even after a comprehensive radiological examination and surgical exploration, the origin of hemorrhage often remains unclear. A 74-year-old woman with sudden abdominal pain, nausea, and vomiting was admitted to our hospital. She had no history of trauma. Computed tomography showed a huge hematoma along the small intestinal mesentery without evidence of visceral organ abnormality causing bleeding. The hematoma was completely removed by surgery and no origin of hemorrhage was detected. Herein, we report on a case of idiopathic spontaneous intraperitoneal hemorrhage.

Intramuscular lipoma is a rare benign tumor. It refers to infiltrating lipoma because it originates between skeletal muscle abundles and infiltrates into the intramuscular septa. Kransdorf reported that the majority of lipomas were located in the trunk, head/neck, and lower extremity. In addition, in research by Kindlom et al., on 43 cases of muscular infiltrative lipoma, there was no case involving the chest wall. We report on a case of intramuscular lipoma on the anterior chest wall. The lesion was removed completely and histopathological findings showed that mature adipocytes had infiltrated serratus anterior muscle in a diffuse manner. After treatment, the patient has shown no complication or evidence of recurrence.