Abstract: A foldable brace assembly for supporting concrete formwork includes a ground brace member pivotably coupled with an end of a wall brace member, such that the wall brace member can pivot to be generally parallel or generally perpendicular relative to the ground brace. With the wall brace member perpendicular to the ground brace member in an erect position, a diagonal brace member detachably couples between an upper portion of the wall brace member and the other end of the ground brace member. The brace assembly may be locked in the erect position, such as by inserting a pin in aligned openings in the wall brace member and the ground brace member. When the brace assembly is not in use, the pin may be removed and the brace assembly can pivot to a folded position with the wall brace member can pivot to be generally parallel to the ground brace.

Abstract: The method for restricting access to sensitive contents of digital images using the digital watermarking technique for encoding and decoding sensitive contents of images is characterized in that the sensitive contents of an image are obscured, and the information necessary for the high quality reconstruction is encoded in the insensitive area of the transmitted image by modification of the DCT spectrum coefficients. The information concerning the obscured contents is retained by means of transform coefficients and processed independently. Noise with statistics identical to that of the digital watermark is inserted into the image after decoding. The system contains encoding unit including acquisition module connected with sensitive contents encoding module through sensitive patterns automatic detection module with attached memory buffer. Also, acquisition module is connected directly with sensitive contents encoding module and with compression module.

Abstract: The method for restricting access to sensitive contents of digital images using the digital watermarking technique for encoding and decoding sensitive contents of images is characterized in that the sensitive contents of an image are obscured, and the information necessary for the high quality reconstruction is encoded in the insensitive area of the transmitted image by modification of the DCT spectrum coefficients. The information concerning the obscured contents is retained by means of transform coefficients and processed independently. Noise with statistics identical to that of the digital watermark is inserted into the image after decoding. The system contains encoding unit including acquisition module connected with sensitive contents encoding module through sensitive patterns automatic detection module with attached memory buffer. Also, acquisition module is connected directly with sensitive contents encoding module and with compression module.