Hello,

I think that the works of Y. Sahraoui could answer your questions. He crossed landscape metrics (related to land use, geomorphology ...), photographs taken along a transect and used pixscape software to produce data of aesthetic potential.

The link to one of his presentations: https://hal.archives-ouvertes.fr/hal-01155450/file/Th%C3%A9oquant_2015_Sahraoui.pdf

Good luck, best regards

The visual perception of a landscape depends on the point of view, which requires a certain distance between the observer and the landscape. The landscape and its point of view are interconnected: the perception of the landscape changes depending on the location of the point of view, which determines the perspective of the landscape itself and the visual accents seen from different positions. Each view point has its own landscape composition, which should be taken into account when laying tourist routes, which should be designated stationary viewing points, where tourists specifically stop to view the landscape and changing viewpoints as they move along the route.

Researchers of landscape aesthetics have proposed several variants of the typology of point types:

1. by the latitude of the landscape view angle:

- points of narrow (slotted) view with an angle of less than 30°;

- sector viewpoints with angles of 30°-115°;

- panoramic view points with angles of 120°-240°;

- circular viewing points (circulars) with angles greater than 240°.

2. by the depth of the landscape perspective:

- points of the nearest perspective-views within ten meters;

- points of average perspective with a view of a hundred meters;

- long-range points with a view of several kilometers.

The depth of the perspective depends on the terrain and the choice of the viewing point on it. When developing the design (aesthetic arrangement) of resort areas, areas of ecological, sports and educational tourism, landscape and aesthetic planning of the territory is carried out with the arrangement of landscape survey sites and the laying of view routes. In natural parks (national and regional), using landscape aesthetic planning, the framework of aesthetic perception of the landscape is formed, which necessarily provides for a Parkway (Park road) that introduces tourists to significant natural objects, including landscape ones. At the same time, it is necessary to evaluate the landscape in ecological terms: the landscapes must be accessible to tourists and the comfort during the stay of tourists in them. A large part of the mountainous landscape is not available for viewing the mass of tourists, in addition to professional climbers. Many Northern landscapes cannot be viewed due to low temperatures and hurricane-force winds, which reduce the human heat perception in Chukotka to extreme values (-60°C or -70°C). Therefore, landscape viewpoints are evaluated comprehensively in terms of positional, aesthetic, and environmental aspects.

Landscape aesthetic research consists of Desk and field research. In the process of Desk research, territories are identified that, according to the combined assessment, morphology, water content and vegetation cover, may have high landscape characteristics. The true beauty of landscapes can only be revealed by full-scale surveys of the territory, in which the emotional impact of the landscape can be manifested. In field route studies, the spatial-temporal structure of landscapes developed by V. A. is used. It consists of identifying elements of landscapes, landscape plots, evaluating specific landscapes and a General set of landscapes along the route.

The description of the landscape along the route includes:

- fixing landscape view points: each point on the route must be fixed on a plan or on a large-scale map indicating its latitude, longitude, height above sea level and relative elevation above the terrain, distance from settlements and roads, and describe the degree of accessibility to visit;

- description of the morphology of the terrain with features of surface rocks, rock outcrops;

- assessment of the state of the soil cover (in terms of passability of the route);

- assessment of vegetation cover: species composition of wood, shrub and grass vegetation, color scheme, tiers;

- to assess the degree of visual openness of surrounding area definition of angle, Outlook and orientation on cardinal points, combination of open and closed spaces, the presence of attractive elements in the landscape;

- availability of view panoramas;

- definition of landscape axes, identification of landscape scenes;

- establishing the depth of landscape perspective.

The conclusion describes the landscape itself, taking into account weather conditions. The route is recorded on photos and, preferably, on a video camera.

Of interest is a complex technique used for the aesthetic assessment of Astrakhan landscapes, which highlights the signs of internal and external landscape diversity and assesses the aesthetics of landscapes with the developed by the author coefficient of aesthetic value. In accordance with the method of Zanozin, it is recommended to divide the territory of the region into zones of various landscape attractions – clusters, which should be taken into account when recreational landscape zoning.

When assessing the landscape attractiveness of landscapes, the proximity of different landscape expressiveness localities becomes important. Against the background of a bedland or monotonous landscape, even a landscape of average aesthetic qualities makes a favorable impression by contrast. This makes it possible to identify landscape "oases" among those that are not favorable for recreational development, which, if necessary, can be used for recreational development.

I think such work can be done through Photogrammetric survey...

No..of photographs may be joined and If you have common points having local XY data , Photo scan software may be useful.. this method can be applied if the result become satisfactory.

Many thanks for your usefull answers !