Abstract:
A method for obtaining a high-resolution digital image from a plurality of starting images P,S formed by pixel matrices and acquired at a lower resolution. The method comprises a phase of combining the plurality of starting images P,S to generate a provisional high-resolution image HR (0) formed by a pixel matrix. The method also comprises a calculation phase to associate a respective error with at least a part of the pixels of the provisional image HR (0) , said calculation phase providing a first error associated with at least one first pixel, and a phase of at least partially processing the provisional image by modifying the pixels of this image on the basis of the respective errors associated with them. The method is characterized by the fact that the calculation phase includes the phase of:
calculating a second error to associate with at least one second pixel situated in the vicinity of said first pixel in the matrix ( HR (0) ), said second error being calculated by using the first error associated with said at least one first pixel.
Abstract:
A method for improving the quality of a digital image acquired with a non-optimal exposure. The method, which is applied directly to the image in CFA (Colour Filter Array) format, identifies the regions of the image that are most important from the perceptive or contentual point of view by means of simple statistical measures. The image is then transformed by inverting the response function in such a manner as to optimize the quality of these regions.
Abstract:
A method of processing digital images in devices for acquiring both individual images and image sequences, comprising the step of acquiring images in CFA (colour filter array) format and the step of reducing the resolution of the images acquired. In order to reduce computing time and energy consumption, the resolution-reduction step processes the images directly in CFA format.
Abstract:
Digital photography apparatus (100), particularly a digital still camera, comprising means (110-125) for acquiring a digital image, compression means (130) for obtaining a compressed image, and a memory (135) for storing the compressed image, the apparatus also including processing means (140) for obtaining a processed image and corresponding processing parameters from the image acquired, the processing means (140) supplying as an output, in a first operative condition, the processed image to be compressed by the compression means (130) and, in a second operative condition, the image acquired to be compressed by the compression means (130) and the processing parameters to be stored in the memory (135).