This article aims to study the design mechanism of landscape lamp modeling based on regional cultural characteristics by using intelligent design methods. Big data technology is used to mine regional cultural level factors from four dimensions: regional, cultural, artistic, and functional. The weight values of all these factors are ranked by analytic hierarchy process (AHP) evaluation system. Meanwhile, the objective fitness of interactive genetic algorithm (IGA) is constructed according to the weight values.Design rules are added to constrain individuals to influence the iteration and output of design process by intelligent means. The intelligent design mechanism of landscape lamp with regional cultural value is constructed by IGA. The intelligent design mechanism based on AHP-IGA is helpful to improve the iterative efficiency of interactive process and reduce project development cost. K E Y W O R D Sintelligent design, interactive genetic algorithm, park landscape lamp, regional cultural value INTRODUCTIONWith the rapid development of economic construction, the construction of all regions tends to be developed homogeneously and the appearance and shape of infrastructure are similar. The regional cultural products play important roles in transmitting the national regional cultural characteristics, which can bring users a special cultural experience. Therefore, it is very important to abandon the subjective design thinking for designer while designing products, but to extract the regional cultural factors by intelligent research methods and integrate them into products, so as to improve the vitality and regional characteristics of product culture. However, the behavior of extracting cultural factors for design is too subjective and abstract, so it is necessary to use qualitative and quantitative intelligent research methods to assist in design.Therefore, the dissemination of regional cultural characteristics requires relevant products to have regional characteristics and cultural communication, which means product design shifts from functional concern to regional emotional concern, and reflects regional cultural characteristics through design. 1 Interactive genetic algorithm (IGA) 2 is a method of searching for the optimal solution by simulating the natural evolution process, which can provide guidance for product design to continue product or brand characteristics. With the assistance of computers, designers can integrate user needs with regional cultural characteristics, and accurately and quickly convert cultural characteristics into design symbols. 3 Dou et al. 4 improved the problem of user fatigue by adding objective constraints, and promoted the operation of interactive process. Xia 5 used analytic hierarchy process (AHP) method to analyze the regional elements of Huashan, and transformed the optimal elements into design factors to guide the design. Chen and Xie 6 used big data technology for data analysis, expanding data capacity and enhancing data credibility. The method of multi-dimensional data collect...

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Color fusion is an extremely important part in the reconstruction design of historic and cultural blocks in the process of China's urban historic and cultural blocks transformation. Based on the deep learning algorithm, this paper constructs the color analysis model of cultural blocks, uses the multiscale feature semantic segmentation algorithm analysis technology of dual channel fusion for color research, extracts and analyzes the color of historic and cultural blocks, thus establishes its color fusion model, analyzes the color defects of Tianzifang historic and cultural scenic spot, and proposes to use plants, buildings and pavements to improve the color fusion degree of Shikumen cultural blocks. K E Y W O R D Sarchitectural color protection, deep learning algorithm, historic and cultural blocks, multiscale feature semantic segmentation THE PRESENT SITUATION OF COLOR COMPOSITION OF HISTORIC AND CULTURAL BLOCKS IN SHANGHAI The importance of color in historic and cultural blocksThe emergence of new materials and technologies has impacted the original construction mode and urban texture of historic and cultural blocks.The architectural color of historic and cultural blocks is an important and relatively stable historic product under the natural conditions and cultural traditions in a specific region. It most directly reflects the characteristics of the blocks that are different from the landscape of other regions. It is an indispensable element in the protection of historic and cultural blocks. The blind worship of international architectural style makes people lose the original cultural memory of the city, lose control over the color style and order, and gradually fall into a loss. Although people have realized the importance of color elements in the protection of historic and cultural blocks to a certain extent, due to the lack of standardized and scientific method guidance, the protectors do not know how to scientifically investigate and study the color of block buildings and make feature extraction, and do not know how to reasonably formulate color protection measures. Therefore, to clarify the architectural color is to grasp the keynote of the historic and cultural blocks. The analysis and study of architectural color will help to provide scientific guiding methods and theoretical basis for the protection of historic and cultural blocks. Color elements of historic and cultural blocksAccording to the many factors that affect the landscape color style in the historic and cultural blocks, the vertical elements of the landscape color style are divided into six parts: building body, landscape greening, pavement, public facilities, plaque advertising and traffic facilities. Among them,

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