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에지특징에 근거한 이미지영역 분리와 DCT를 이용한 얼굴 인식
박수봉,이인범 東新大學校 1998 論文集 Vol.10 No.-
In this paper, we propose a face recognition algorithm which extract characteristics of image using edge and DCT(Discrete Cosine Transform). In this algorithm, training vectors of neural networks is the extracted data. With the same luminesce and distance, the fixed CCD camera, human face was captured. Edge characteristics of face images is concentrated in eye bows and mouth. Therefore, using edge characteristics of face images, it was segmented with square region. we determined this area to the characteristics region of face images, and contains eye bows, eyes, nose and mouth. Also, after executing DCT for this square region, we extracted feature vector. This feature vector was normalized and set the input vector of neural networks. Simulation results show 100% recognition for 30 face images when face images were learned and 94% recognition rate when face images weren't learned. Also, in case of DCT processing, the proposed algorithm reduced 55% operation time than to process all face images.
박수봉 김천대학교 2003 김천대학교 논문집 Vol.24 No.-
Fifteen subjects were fitted with progressive additional lens and they were divided into 3 groups. The first group had never worn add for reading before and their adds ranged between +1.00 - +1.50D. The second group made up of wearers who had been wearing a standard from of bifocal before switching to progressive additional lens and their adds fell in the +1.75 to +2.00D range. The third group comprised subjects who had been wearing a standard form of bifocal before choosing the progressive lens and their adds utilized a +2.25 to +2.50D. After wearing identical near power in blended bifocal, 13 subjects preferred to wear the progressive additional lenses. The second experiment subjects were 20 people and had never worn pro- gressive lens before. The first group whose add ranged between +1.00 and +1.50D. 4 of 6 had never worn adds for reading before. Eight subjects com- prised a group whose add powers fell in the +1.75 to +2.00D range. Only one of these had not worn some addition for near before. The final 6 required adds of +2.25 and +2.50 and had been wearing a near point addition for some time. Some tried the blended lenses first and then the progressive lenses while some wore the progressive lenses before the blended. 15 chose the progres- sive additions, with two selecting blended lenses and 3 returning to a stan- dard form. The experiment reveals that given any opportunity to compare the optical aspects of both blended bifocals and progressive addition lenses, the over-whelming propotion of subjects selected a progressive addition lens. A blended bifocal, despite the fact that it also caters to cosmetic favor through its invisibility is not an actual substitute for or replacement of a progressive addition lens insofar as apparent optical features and patient comfort and preference is concerned.
인공수정 후 외인성 Progesterone과 Estradiol 병용 및 Progesterone 단독 투여 기간이 젖소의 번식 성적에 미치는 영향
백광수,이왕식,박수봉,박성재,김현섭,이현준,기광석,강석진,안병석 韓國受精卵移植學會 2007 한국동물생명공학회지 Vol.22 No.3
본 연구는 젖소에 있어서 인공수정 후 외인성 progesterone과 estradiol을 병용 투여하거나 progesterone을 단독 투여하는 경우에 처리기간별 젖소의 번식 성적에 미치는 영향을 조사하기 위하여 대조군, CIDR에 estradiol 캡슐을 부착시킨 progesterone과 estradiol 병용 투여군(PE군) 및 CIDR에서 estradiol 캡슐을 제거한 progesterone 단독 투여군(P군)로 구분하여, 인공수정 후 14일째에 This study was carried out to investigate the effects of hormones treated (progesterone, and combination of progesterone and estradiol) on the reproductive performance of dairy cattle. The intravaginal CIDR was inserted in the vagina of cow on day 14 (P-7, PE-7), 16 (P-5, PE-5) and 18 (P-3, PE-3) post-insemination to stimulate progesterone secretion with (PE) and without estradiol(P). The CIDR was removed on 7 (P-7, PE-7), 5 (P-5, PE-5) and 3 (P-3, PE-3) days after. The cows for control group were not treated with CIDR or hormones. Conception rate, the duration needed for conception after AI and the number of AI services needed for conception were measured. Conception rate in control, CIDR without estradiol (P-7, P-5 and P-3) and CIDR treated (PE-7, PE-5 and PE-3) cows were 15.8%, 40.0%, 31.5%, 28.6%, 62.5%, 50.0% and 0%, respectively. The days needed for conception after AI in control, P-7, P-5, p-3, PE-7, PE-5 and PE-3 were 64.9, 63.0, 59.1, 8.0, 0.0, 18.9 and 83.3 days, respectively. The days needed for conception in cows treated with CIDR (PE-7) has shown longer than control and PE-3 (p<0.05). The number of AI services needed for conception in control, CIDR (PE-7, PE-5 and PE-3) and CIDR without estradiol treated cows (P-7, P-5 and P-3) were 27, 2.3, 1.9, 1.3, 1.0, 1.7 and 2.8 times, respectively. The number of AI services needed for conception have shown significantly lower in PE-7 compared to control and PE-3.
박수봉 김천대학교 1998 김천대학교 논문집 Vol.19 No.-
The purpose of this was to compare the right and left eye size.