Holography

Your fingerprint is actually 3D − research into holograms could improve forensic fingerprint analysis

Retrieved on: 
Wednesday, January 17, 2024

But the imprint your finger leaves on the surface of the button is actually a 3D structure called a fingermark.

Key Points: 
  • But the imprint your finger leaves on the surface of the button is actually a 3D structure called a fingermark.
  • A 2D fingerprint neglects the depth of the fingermark, including pores and scars buried in the ridges of fingers that are difficult to see.
  • I’m an educator and scientist who studies holography, a field of research that focuses on how to display 3D information.

Fingermark types

  • Patent fingermarks are the most visible type – bloody fingerprints at crime scenes are one example.
  • Plastic fingermarks are found on soft surfaces, such as clay, Play-Doh or chocolate bars.
  • Cyanoacrylate makes super glue in its liquid form, but as a gas it can make latent fingermarks visible.


Finally, Level 3 features, such as pores, scars and creases, are too small for the human eye to resolve. This is where optical techniques like holography come in handy, since optical wavelengths are in the order of microns, small enough to make out small details on an object.

Developing fingermark holograms

  • Since fingermarks are usually collected as 2D pictures, and holograms display 3D information, my team wanted to develop a technique that can show all the 3D topological characteristics of a fingermark.
  • Columnar thin films are dense pillars of glassy material that uniformly cover the fingermark, like a dense growth of identical trees in a forest.
  • To make a hologram of something like a 3D fingermark, researchers split light from a laser into two parts.
  • One part, called the reference wave, shines directly on a digital camera.
  • The other wave shines on the object, in this case the fingermark.

Picking up fingermarks

  • In 2017, our collaboration reported our first results, where we made 3D pictures of latent fingermarks using the CTF technique.
  • We recorded holograms of the CTF-developed fingermarks with two different wavelengths of light – green and blue – generated from a laser.
  • The Miami Valley Regional Crime Lab in Dayton, Ohio, has graded the quality of the fingermarks captured by Lakhtakia’s research group.


Partha Banerjee’s Holography and Metamaterials (HaM) Lab has used Digital Holography for many applications funded by DARPA, Air Force and Army. The current joint work on fingermarks is supported by a grant from the Criminal Investigations and Network Analysis (CINA) Center of the Department of Homeland Security (DHS).

WiMi is Working on a New Mixed Byzantine Fault Tolerant (MBFT) Algorithm to Enhance Blockchain Fault Tolerance

Retrieved on: 
Tuesday, January 16, 2024

Beijing, Jan. 16, 2024 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced that it is working on a novel mixed byzantine fault tolerance (MBFT).

Key Points: 
  • Beijing, Jan. 16, 2024 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced that it is working on a novel mixed byzantine fault tolerance (MBFT).
  • MBFT has its origins in the PBFT algorithm, the first consensus algorithm used in the Union Blockchain, but in many ways, MBFT has improved and innovated.
  • In addition, MBFT introduces a random node selection mechanism and a credit mechanism to further enhance its security and fault tolerance.
  • MBFT algorithm can reduce blockchain forks while ensuring high fault tolerance and speed.

WiMi is Working on the Blockchain Secure Storage Strategy Based on the MCMC Algorithm

Retrieved on: 
Friday, January 12, 2024

This blockchain secure storage strategy utilizes MCMC to improve blockchain data storage security.

Key Points: 
  • This blockchain secure storage strategy utilizes MCMC to improve blockchain data storage security.
  • The core of the blockchain secure storage strategy based on the MCMC algorithm is to use the MCMC algorithm to generate a series of random numbers, which are used to generate key data such as transaction hashes in the blockchain.
  • Specifically, the blockchain security storage strategy based on the MCMC algorithm includes procedures such as determining the data scope, building the MCMC algorithm, generating random numbers, encrypting processing, and distributed storage.
  • Therefore, the blockchain security storage strategy based on the MCMC algorithm can effectively improve the security of blockchain data and prevent data from being tampered with.

WiMi is Working on the Optimization of a Blockchain Hashing Algorithm Based on PRCA

Retrieved on: 
Wednesday, January 10, 2024

The specific implementation of the blockchain hash algorithm optimization scheme based on PRCA is to apply PRCA to the blockchain hash algorithm, and to realize the re-configurable hash algorithm by means of a full pipeline.

Key Points: 
  • The specific implementation of the blockchain hash algorithm optimization scheme based on PRCA is to apply PRCA to the blockchain hash algorithm, and to realize the re-configurable hash algorithm by means of a full pipeline.
  • In the process of exploring the optimization of blockchain hash algorithm based on PRCA, WiMi also considered the privacy protection of blockchain technology.
  • In this way, the blockchain hash algorithm optimization based on PRCA not only improves the performance and security of the blockchain, but also increases the protection of user privacy.
  • In the future, WiMi will continue to delve into the optimization of the blockchain hash algorithm based on PRCA and explore its application in more fields.

WiMi Developed PBO-Based Dynamic Optimization Algorithm That Can Be Applied to Blockchain and Bitcoin Trading Strategies

Retrieved on: 
Monday, January 8, 2024

In order to obtain models that perform better out-of-sample, WiMi has developed a dynamic optimization algorithm based on PBO, namely the "PBO-DOA algorithm".

Key Points: 
  • In order to obtain models that perform better out-of-sample, WiMi has developed a dynamic optimization algorithm based on PBO, namely the "PBO-DOA algorithm".
  • This algorithm is important in quantitative trading because it can dynamically optimize the model's parameters to help investors build optimal portfolios.
  • WiMi's PBO-DOA allows for more scientific optimization of blockchain and bitcoin trading strategies, thereby increasing portfolio returns and controlling risk.
  • Algorithms in blockchain and bitcoin trading strategies are over-optimizing the weight allocation of portfolios, maximizing returns, and controlling risks.

WiMi Announced Image-Fused Point Cloud Semantic Segmentation with Fusion Graph Convolutional Network

Retrieved on: 
Friday, January 5, 2024

Beijing, Jan. 05, 2024 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced an image-fused point cloud semantic segmentation method based on fused graph convolutional network, aiming to utilize the different information of image and point cloud to improve the accuracy and efficiency of semantic segmentation.

Key Points: 
  • Beijing, Jan. 05, 2024 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced an image-fused point cloud semantic segmentation method based on fused graph convolutional network, aiming to utilize the different information of image and point cloud to improve the accuracy and efficiency of semantic segmentation.
  • Image fusion point cloud semantic segmentation with fusion graph convolutional network can fuse image and point cloud data acquired by robots to improve the ability to perceive and understand the external environment, which helps robots to better accomplish tasks.
  • The image-fused point cloud semantic segmentation with fusion graph convolutional network can fuse medical images and point cloud data to improve the segmentation and recognition accuracy of medical images, thus providing more accurate data support for medical diagnosis and treatment.
  • WiMi will continue to improve the real-time processing of the image-fused point cloud semantic segmentation with fusion graph convolutional network capability to meet the demand.

ZEISS at CES 2024: Multifunctional Smart Glass for a wide range of innovative applications

Retrieved on: 
Thursday, January 4, 2024

At the CES – Las Vegas Convention Center West Hall, W306 – ZEISS will present its industrial solutions with equipment and processes for mass production.

Key Points: 
  • At the CES – Las Vegas Convention Center West Hall, W306 – ZEISS will present its industrial solutions with equipment and processes for mass production.
  • A remarkable example of the new design possibilities presented by ZEISS Multifunctional Smart Glass can be seen in floating switches.
  • Other applications of ZEISS Multifunctional Smart Glass technology can be found especially in the smart home.
  • The innovative ZEISS technology has the potential to completely rethink parts and components in terms of design and function in many application fields.

WiMi Developed RPSSC Technology With Multiple Advantages in Hyperspectral Image Processing

Retrieved on: 
Wednesday, January 3, 2024

First, the RPSSC uses principal component analysis (PCA) and LDA algorithms to downscale the original hyperspectral image.

Key Points: 
  • First, the RPSSC uses principal component analysis (PCA) and LDA algorithms to downscale the original hyperspectral image.
  • WiMi's RPSSC technology has multiple technical advantages in realizing the comprehensive utilization of spectral and spatial features of hyperspectral images.
  • RPSSC technology marks an important breakthrough for WiMi in the field of hyperspectral image classification.
  • WiMi's RPSSC technology represents the cutting edge of hyperspectral image classification.

WiMi Built an Efficient, Blockchain-compatible Heterogeneous Computing Framework

Retrieved on: 
Wednesday, December 27, 2023

Beijing, Dec. 27, 2023 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced that by combining cloud servers, general-purpose computers, and FPGAs, WiMi has built a blockchain heterogeneous computing framework named "HeteroBlock Framework".

Key Points: 
  • Beijing, Dec. 27, 2023 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced that by combining cloud servers, general-purpose computers, and FPGAs, WiMi has built a blockchain heterogeneous computing framework named "HeteroBlock Framework".
  • The framework is designed to provide users with efficient, flexible, and reliable blockchain computing services to meet the growing computing demand.
  • Among them, FPGA, as a heterogeneous computing node, is capable of performing tasks such as asymmetric computing, hash computing, block generation, and consensus computing.
  • By combining relevant communication protocols and software algorithms, the framework improves the blockchain network structure and provides strong support for general-purpose computing nodes and heterogeneous nodes.

WiMi Applied Bitcoin Algorithm DHT Technology to Build Decentralized File Storage and Sharing System

Retrieved on: 
Tuesday, December 26, 2023

Beijing, Dec. 26, 2023 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced that a decentralized file storage and sharing system is built by applying the bitcoin algorithm distributed hash table (DHT) technology.

Key Points: 
  • Beijing, Dec. 26, 2023 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ: WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced that a decentralized file storage and sharing system is built by applying the bitcoin algorithm distributed hash table (DHT) technology.
  • WiMi draws on this decentralized idea to build a file storage and sharing network consisting of multiple nodes.
  • Bitcoin's algorithm can be applied to build such a DHT system for decentralized file storage and sharing.
  • The decentralized file storage and sharing system built by WiMi that applied Bitcoin algorithm DHT technology, not only improves data security and reliability but also combines efficiency and anonymity.