Regulating contrast of image of eye fundus / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
; (53): 205-207, 2006.
Article
in Zh
| WPRIM
| ID: wpr-408276
Responsible library:
WPRO
ABSTRACT
BACKGROUND: Treating vascular image of eye fundus is a prerequisite for quantitative analysis; however, practical operation is so restricted by equipment, noise and current that results of image are not ideal; therefore, it is necessary for image to improve its contrast.OBJECTIVE: To search an ideal way to regulate contrast of image.DESIGN: Compared analysis.SETTING: Department of Instrument, Daping Hospital affiliated to the Third Military Medical University of Chinese PLA; Fuyang Cancer Hospital.METHODS: To introduce two ways for regulatiug contrast of image, including exponential curve method and red-deepening dichroism technique;meanwhile, controllable parameters are also analyzed.RESULTS: After process of exponential curve, contrast near by gray value at the center of image changed greatly, and gray value near by 0 point did uot reach 0 value, this suggested that image was not of deformation. However, during dichroism operation, light cyanine was observed at light color region at the phase of red-deepening because of decreasing red quantity.Parameters of horizontal movement presumed as 0 were used to analyze results mentioned above.CONCLUSION: It is better effect of exponential curve method on improving contrast of image of eye fundus.
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Index:
WPRIM
Language:
Zh
Journal:
Chinese Journal of Tissue Engineering Research
Year:
2006
Type:
Article