Technological and connected modern cities demand effective decisions by managers that are aligned with citizens demands. The strategic digital city that comprises strategies, information, services, and information technology resources can provide the necessary context so that decisions based on evidence are made possible at the municipal level of management. The objective of this study is to propose a municipal decision process model in the context of the strategic digital city. The research methodology employed was qualitative and applied to circumstantial theoretical reality, emphasizing exploratory and descriptive methods aided by bibliographic and documentary survey along with the non-participatory observation of the variables that make up the model. Similar models were identified and analyzed. The municipal decision process in the context of the strategic digital city was built from three constructs: decision, evidence, and strategic digital city. These constructs are interconnected by their thirteen variables, which are related to the conceptual base of the model developed. The conclusion reinforces the importance of using evidence to support the decision process, making it one of the strategic elements for digital cities aiming at improving their citizens quality of life.

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In the contemporary era of information, it is a critical challenge for city managers to meet the demands of their citizens at the same pace as the development of its information technology resources. Guarapuava is an example of a centennial town that has been predominantly agricultural and now seeks to adjust to the population density and the new information age. Much like Guarapuava, many cities in Brazil and around the world are in a similar condition. The new reality of many towns is challenging for municipal managers. Strategic digital city is the application of information technology resources in the management of the city. The objective of this paper is to analyse the decision-making processes, strategies, public services, information technologies, and relationships with strategic digital city issues in the city of Guarapuava, Parana, Brazil. Using a survey methodology based on the research variables, we showed that the municipality has informal characteristics of the concept of a strategic digital city. Based on the results, the evidence domain types in the city are predominant for internet and colleagues inside the organization on a daily base. Google scholar is the most consulted research source of evidence. Respondents well know the term methodology. Their attitudes towards scientific research show that it is essential for managers and that managers are aware of how to use that technology. Related to evidence-based management the respondents, in general, agreed that using by evidence-based practices, managers can improve the quality of their work, and that this should be part of their formal education. Citizens should be utilised more as a source of evidence as well, as they are the users of the institutions. The strategies are more focused on the government and its administration, however, these strategies could include areas like science and technology. The city offers electronic public services to improve citizens lives, and to be more transparent in sharing information through these alternative channels. The analysis revealed the effort of the town to include citizens in the digital era, and its attempt to connect with them. The research serves as a reference for other municipalities with an interest in analysing projects related to the decision-making process, strategies, information, public services, and use of its IT resources. The study is also a contribution to academic knowledge in relation to the study of public policies related to urban management. Finally, the study contributes to the field of research related to the study of strategic digital city, serving as a basis for future studies in this discipline.

The objective of this paper is to present the results of a class developed with routines in Java language, and contribution of OpenCV library, for analysis and extraction of metadata from images. To evaluate the developed class, three different figures were produced in cardstock and their perimeters were measured with a millimeter ruler. Then these figures were scanned for further image analysis with aid of the developed class. The images of the figures were initially saved in BMP format. After it, each of the images in BMP format were saved in JPG and PNG file formats resulting, at the end, on nine images. The validation of the correct extraction of the image metadata and so the perimeter value of the object was performed by comparing the values obtained by direct measurement perimeter of the figure, with a millimeter ruler, and the values obtained with digital image processing, counting the contour pixels of the image of the figure, and using the image resolution, one of the extracted metadata. For the edge detection and counting of the contour pixels of object, the algorithms cvFindContours() and cvContourPerimeter(), of OpenCV library, were used. It was obtained, for the worst case, a percentage error of 8.0 %, for images with BMP and PNG format. Therefore, the developed class presents satisfactory results and is recommended to extract and calculate measures of an object present in the image.