Abstract: The present invention relates to a protection system for printed documents using steganographic and computer vision, materialized by the use of portable devices, where ETCODE encoded images are generated for this purpose. This method was created in order to ensure the document's authenticity, integrity of information, store information about authorship and copyright protection of printed documents. The protection method described in this patent is to generate an encoded image ETCODE using steganographic techniques, to be printed with the document, using conventional printers, and also that the decoding is performed by a digital camera portable device, obtaining therefore the information hidden in ETCODE, and then confronted with the information about the document in its digital version present in a database, thus fulfilling the proposal document protection.

Abstract: A method for restoring an image of a blurred barcode includes capturing the image, restoring the image by selecting one Optical Transfer Function (OTF) in a database and performing deconvolution on the image, decoding the barcode in the restored image to return numbers represented by the barcode, and displaying the returned numbers.

Abstract: The present invention relates to a protection system for printed documents using steganographic and computer vision, materialized by the use of portable devices, where ETCODE encoded images are generated for this purpose. This method was created in order to ensure the document's authenticity, integrity of information, store information about authorship and copyright protection of printed documents. The protection method described in this patent is to generate an encoded image ETCODE using steganographic techniques, to be printed with the document, using conventional printers, and also that the decoding is performed by a digital camera portable device, obtaining therefore the information hidden in ETCODE, and then confronted with the information about the document in its digital version present in a database, thus fulfilling the proposal document protection.

Abstract: A method for automatic food recognition by using portable devices equipped with digital cameras. With this system, it is possible to identify a previously established food menu. To this purpose, a semi-automated method of segmentation is applied to delineate the regions in which each type of food in an image of a plate of food, captured by a user. Pattern recognition techniques are used in images, integrated into a system whose goal is to label each type of food contained in the photo of a plate of food. No type of preprocessing is performed to correct deficiencies in capturing the image, just using the auto-focus component present in the portable device to capture a clear image.

Abstract: The present invention relates to the field of human interaction with mobile devices, more specifically the interaction done by the automatic recognition of barcode images captured by the camera integrated in portable devices, particularly mobile phones, smartphones, Personal Digital Assistants PDAs, portable digital camera, among others. The present patent application relates to a method to effect the reading of barcodes by means of portable devices with digital cameras. The present invention provides a method to restore barcode images damaged by the blurring effect due to the lack of focus of the captured images with low cost cameras with fixed focus. The proposed method treats the image of barcodes in order to enable correct decoding of its content.

Abstract: The present invention relates to a method for automatic food recognition by means of portable devices equipped with digital cameras. With this system, it is possible to identify a previously established food menu. To this purpose, a semi-automated method of segmentation is applied to delineate the regions in which each type of food in an image of a plate of food, captured by a user. Pattern recognition techniques are used in images, integrated into a system whose goal is to label each type of food contained in the photo of a plate of food. No type of preprocessing is performed to correct deficiencies in capturing the image, just using the auto-focus component present in the portable device to capture a clear image.

Abstract: A system for decoding barcodes, by having an integrated hardware and software solution for reading and decoding of barcode using portable devices that have a camera.