| With the rapid development of landscape lighting engineering in China,the economic value of modern architectural nightscape has been gradually explored.With the help of lighting,modern architecture can continue its"vitality"at night,making the night of the city more colorful.In this paper,Hankou area of modern western architecture landscape lighting research object,in the way of subjective evaluation of modern architecture night landscape lighting effect subjective evaluation research.In the introduction part,this paper discusses the development process of modern architecture and urban landscape lighting in China,combs the laws and theories related to night landscape lighting of western style historical buildings at home and abroad,and lists the current research and literature related to landscape lighting and lighting emotional evaluation of modern architecture in China,It is concluded that the current landscape lighting standards have not yet made a targeted specification for modern architectural landscape lighting,and there is also a lack of subjective evaluation experimental research results of modern architectural landscape lighting.Therefore,it is meaningful to carry out this research topic.In the second chapter of this paper,it discusses the theoretical knowledge of modern architectural landscape lighting design requirements,and briefly expounds the principle of human vision and the color attribute and chromaticity principle of laboratory display screen.In the third chapter of this paper,the basic information of modern architecture in Hankou area(type,material,color,etc.)and the influencing factors of landscape lighting(lamp type,lighting mode,brightness value,color temperature value,urban background brightness value,etc.)are investigated on the spot,and the current situation and existing problems are summarized and analyzed,At the same time,it also provides data reference for the experimental part of this paper.In the fourth chapter,according to the theoretical basis of color and brightness calibration,the process of color and brightness restoration and calibration of the display screen used in the experiment is carried out to restore the true brightness and color state of the simulated picture to the greatest extent,so as to prepare for the subsequent subjective evaluation experiment of modern architectural landscape lighting visual effect.Combined with the results of field investigation and relevant urban landscape lighting specifications,the variable parameters used in this experimental study are determined.Through two pre experiments of"lighting mode"and"facade brightness",the best lighting form of modern architectural landscape lighting and the brightness ratio of different parts of the facade are determined in advance.And the experimental results are applied to the following two experiments:the experiment of subjective evaluation of brightness on lighting visual effect and the experiment of subjective evaluation of color temperature on lighting visual effect.Finally,combined with the above contents and related experimental psychological methods,two experiments were carried out:"the experiment of subjective evaluation influence of brightness on lighting visual effect"and"the experiment of subjective evaluation influence of color temperature on lighting visual effect".In the fifth chapter,the influence of brightness,color temperature,background brightness and facade material on the experimental results is summarized and analyzed.Combined with the experimental scoring results and line chart,the change trend of subjective evaluation under different lighting environments and the corresponding parameters of brightness and color temperature of the best lighting effect are summarized and analyzed.Through the experimental study of the influence of the brightness and color temperature of modern architectural landscape lighting on the visual effect,the following specific conclusions are obtained.(1)In the experiment of lighting mode,it is found that the better the lighting effect of the opposite wall and characteristic structural elements(such as columns,railings,etc.)is,the better the subjective evaluation result is.(2)In the experiment of facade luminance ratio,it is found that the smaller the difference of facade luminance ratio,and the closer the facade luminance value is to25cd/m~2,the better the subjective evaluation result is.(3)In the brightness experiment,it is found that when the overall color saturation of the building facade is very low and the lightness is very high,with the decrease of the color lightness of the building facade and the increase of the color gray,the luminance preference gradually decreases from the medium high luminance range of 40cd/m~2-55cd/m~2to the medium luminance range of 25cd/m~2-40cd/m~2.When the overall color saturation of the building facade is very high and the lightness is very low,the luminance preference is in the range of 25cd/m~2-40cd/m~2.With the improvement of background environment luminance,people’s subjective preference for the luminance environment with the elevation luminance of 25cd/m~2 increased,while the subjective preference for the brightness environment with the elevation luminance of 55cd/m~2 decreased,and they always preferred the medium luminance range of 40cd/m~2.(4)In the experimental study of color temperature,it is found that the subjective evaluation result of lighting color temperature is related to the color of building facade.When the color saturation is very low and the lightness is very high,people tend to prefer the medium and low color temperature environment of 2000K-3000K.(5)When the color saturation is the same or similar,with the decrease of color brightness,the color temperature environment with the highest preference for light color light gradually changes from 2500k-3000k to 2000k-2500k,and the preference for light color light color temperature gradually decreases.With the increase of color saturation of building facade and the decrease of lightness,people’s preference for color temperature of light source is gradually increased. |
PDF Full Text Request