Methods for visual content processing, and systems and computer program codes thereto

摘要

Computer implemented methods, systems and computer program codes for creating visual content to be output. The methods and systems are applicable in content visualizations wherein the content to be output is to be formed in a layered manner. According to the method image content item or items are received and are categorized on a basis of content type to one or more categories. The image content item or items in the category or categories are rendered into one or more raster canvases, which represent image content data in the category. The image content data from the raster canvases are compressed, wherein the compression method for image content data in each of the raster canvases is selected on a basis of the categorization of image content items rendered in the raster canvas. The compressed image content data from the raster canvas is stored in a memory for further actions.

主权项

1. A computer implemented method for creating visual content to be output in a layered manner, the method comprising:
a) receiving at least two image content items, b) categorizing the received image content items on a basis of a type of the image content items to at least two categories wherein the categorization is configured to take into account at least vector graphics and raster graphics as different types of the image content items, c) rendering the image content items in each of the at least two categories into corresponding number of raster canvases, each raster canvas representing image content data in one category, wherein at least two raster canvases are overlapping and wherein the overlapping area in each overlapping raster canvases is set transparent except on areas wherein the raster canvas in question comprises image content data, d) compressing the image content data in each of the raster canvases, wherein the compression method for each of the raster canvases is selected on a basis of the image content data in the raster canvas to be compressed so that if a raster canvas comprises transparency information it is compressed with a lossless compression method, e) storing the compressed image content data of each of the raster canvases.