An image coding device adapted to code time-continuous pictures is provided. An embedding position information conversion unit acquires embedding position information indicating a position in a picture, by using a one-way function based on time-continuous information. An image coding unit selects a coding block in the picture based on the embedding position information, embeds electronic watermark information in a coding parameter used to code the coding block, and codes the coding block by using the coding parameter in which the electronic watermark information is embedded.

An encoding apparatus partitions a digital image into multiple regions for subsequent encoding. A first encryption code is associated with a first region, a second encryption code is associated with a second region and the first code, and a third code is associated with the first code, the second code and a third region. An authentication apparatus authenticates the digital image in an inverse process.

A method for processing a digital content includes acquiring content data using a sensor. Compressed reference data is generated from the acquired content data. A hash of the compressed reference data is generated using a hashing function. The generated hash is signed using an encryption function. The acquired content data is transmitted along with the compressed reference data and the signed hash.

A video stream management system includes a video controller that live renders video. Moreover, the video stream management system also includes a display that is communicatively coupled to the video controller and displays a primary video feed that includes the live rendered video. The video controller, the display, or a combination thereof, embeds a pixel pattern in the primary video feed. Additionally, the video feed management system monitors one or more displayed images on the display to identify an error in the primary video feed.

A marking color of a marking material (e.g., ink, toner, etc.) within a printer has a marking spectral reflectance property. Print media that has a media color approximately matching the marking color, but a different media spectral reflectance property, is identified (to form a geometric metameric pair). Differently colored calibration patches of the marking material are printed on a test sheet of the print media. A calibration patch, in which the printed color of the marking material most closely visually matches the media color, is used to identify a revised marking color. A watermark is printed on the print media using the revised marking color. The difference between the marking spectral reflectance property and the media spectral reflectance property causes the watermark to be visibly observable on the print media from one angle but prevents the watermark from being visibly observable from a different angle.

An encoding apparatus partitions a digital image into multiple regions for subsequent encoding. A first encryption code is associated with a first region, a second encryption code is associated with a second region and the first code, and a third code is associated with the first code, the second code and a third region. An authentication apparatus authenticates the digital image in an inverse process.

This application relates to the field of digital watermark technologies and discloses a digital watermark embedding method and extraction method, a digital watermark embedding apparatus and extraction apparatus, and a digital watermark system. The method includes obtaining a digital watermark of a composite file, splitting the digital watermark into N sub-watermarks according to a carrier quantity N of the composite file, each sub-watermark being corresponding to partial content of the digital watermark, embedding an i.sup.th sub-watermark in an i.sup.th carrier of the composite file, to obtain an i.sup.th target carrier, and integrating N target carriers into a target file. This application resolves a problem in the related technology that a digital watermark technology cannot ensure integrity of an order file, and protects carriers of a composite file, thereby ensuring security and integrity of the composite file.

Apparatus and methods are provided for post-recording, pre-streaming, pre-storing, video filtering and processing of personally-identifiable information (PII). The system may include a video recording device operable to record videos. The system may include a machine-learning, artificially-intelligent filtering module. The filtering module may receive recorded videos from the video recording device. The filtering module may analyze the recorded video to identify PII included in the recorded videos. The filtering module may delete the identified PII. The filtering module may enable streaming of the recorded video absent the PII. The system may include a streaming module. The streaming module may stream the video to a physical storage medium. The system may include a storage medium. The storage medium may receive the recorded streamed video absent the PII.

Apparatus and methods are provided for post-recording, pre-streaming, pre-storing, video filtering and processing of personally-identifiable information (PII). The system may include a video recording device operable to record videos. The system may include a machine-learning, artificially-intelligent filtering module. The filtering module may receive recorded videos from the video recording device. The filtering module may analyze the recorded video to identify PII included in the recorded videos. The filtering module may delete the identified PII. The filtering module may enable streaming of the recorded video absent the PII. The system may include a streaming module. The streaming module may stream the video to a physical storage medium. The system may include a storage medium. The storage medium may receive the recorded streamed video absent the PII.

Systems and methods for insertion of a watermark into images and tampering detection of the watermarked images by a Convolutional Neural Network (CNN) technique. The traditional systems and methods provide for detecting the tampering of the watermarked images by simply identifying a presence of an inserted watermark into an image but none them provide for inserting a random sequence into input image(s) and then detect the tampering by classifying the input image(s) by a neural network. Embodiments of the present disclosure provide for insertion of the watermark into the input image(s) and tampering detection of the watermarked images by training a Convolutional Neural Network (CNN) 201 to classify the images as tampered or non-tampered, extracting random noise, obtaining non-classified watermarked images from the random noise, and obtaining, from the non-classified watermarked images, classified watermarked images and detecting an absence or a presence of the tampering based upon the classified watermarked images.