Image encryption has unique characteristics that differs from other data, with pixels representation having undergone many encryption techniques, such as data embedding, AES, chaotic transpositions, DES etc. Some of these techniques are not really practical for the modern security application, although other techniques proposed against reversible attack, by combining both Chaotic Steganography and Cryptography together, in order to increase encryption strength. In this proposal work, we used structural and non-linear technique, using pre-defined encoding system and FFT shifting, to produce QRs keys for both encryption and decryption processes, the initial keys are present, but not dependent as secrets keys, they are encoded dynamically each time, to generate vector of Bar Codes, then reshaped to QR codes thru generation phases. We calculated the information entropy that reached up to 7.995 for the encrypted image, and NPCR is 99.62%, as well as, the average changing intensity UACI up to 33.95% for some results on our samples. These results are compared with some previous methods and it came with good ranking.
:Adaptive ornate milling technology involves variation of milling operational parameters (particularly, cutter feed speed) based on wood surface texture at the processing spot. It is appropriate to use wood fiber orientation optical recognition method for adaptive ornate milling. Adaptive milling method is very efficient for ornate milling, when cutter moves along a complex trajectory in space, and feed direction and fibers alignment substantially alters along the trajectory. Moreover, at sharp trajectory sections, adaptive choice of operational parameters permits to materially reduce the chance of wood damaging. Adaptive milling method is most effective for poor value wood that has low stress-strain properties and complex surface structure, so is very prone to damage.System for programmed PID controller adjustment involves computer with software for certain operating system, input/output hardware and connector cables. Communication with facilities is typically performed by use of ОРС server. While adjusting, an object is included in the control loop. The system adjusts and PID controller is registering obtained parameters. Obtained in such way controller parameters will be near optimal due to intuitive user interface, high computer capability and limitless system identification algorithms.The format in the search shows schematic structure of automated control system of tool feed in adaptive milling, which uses CNC-controlled 3D vertical milling machine, control computer and camera for wood fiber orientation optical recognition, its signal being transferred to milling parameters optimization application. It should be noted that at such milling with control of supply rate along the complex trajectory of supply of the milling tool, it would be possible to significantly reduce the percentage of shatters. This would allow to significantly reduce economic expenditures for additional operations concerning the surface recovery.
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