Nothing Special   »   [go: up one dir, main page]

Sha et al., 2017 - Google Patents

Research on auto-focusing technology for micro vision system

Sha et al., 2017

Document ID
1560543056242252386
Author
Sha X
Li W
Lv X
Lv J
Li Z
Publication year
Publication venue
Optik

External Links

Snippet

The paper presents a passive auto-focusing technology by combining the discrete cosine transform (DCT) algorithm and small univalve segment assimilating nucleus (SUSAN) algorithm with evaluation function. The new method has the advantage of unimodal, local …
Continue reading at www.sciencedirect.com (other versions)

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
    • G02B21/365—Control or image processing arrangements for digital or video microscopes
    • G02B21/367—Control or image processing arrangements for digital or video microscopes providing an output produced by processing a plurality of individual source images, e.g. image tiling, montage, composite images, depth sectioning, image comparison
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30004—Biomedical image processing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/24—Base structure
    • G02B21/241—Devices for focusing
    • G02B21/244—Devices for focusing using image analysis techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06K—RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00—Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/36—Image preprocessing, i.e. processing the image information without deciding about the identity of the image
    • G06K9/46—Extraction of features or characteristics of the image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration, e.g. from bit-mapped to bit-mapped creating a similar image
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00—Other optical systems; Other optical apparatus
    • G02B27/0075—Other optical systems; Other optical apparatus with means for altering, e.g. increasing, the depth of field or depth of focus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225—Television cameras; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/232—Devices for controlling television cameras, e.g. remote control; Control of cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in, e.g. mobile phones, computers or vehicles
    • H04N5/23212—Focusing based on image signal provided by the electronic image sensor

Similar Documents

Publication Publication Date Title
Sha et al. Research on auto-focusing technology for micro vision system
JP7075743B2 (en) Variable focal length lens with multi-level magnified depth of field image processing function
Shen et al. Robust focus measure for low-contrast images
Zhang et al. A new focus measure method using moments
Mahmood et al. Nonlinear approach for enhancement of image focus volume in shape from focus
JP2018537709A (en) Computer microscope and method for generating images under different illumination conditions
Mahmood et al. Optimal depth estimation by combining focus measures using genetic programming
Xu et al. A comparison of contrast measurements in passive autofocus systems for low contrast images
Sigdel et al. Focusall: Focal stacking of microscopic images using modified harris corner response measure
DiMeo et al. Fast and accurate autofocus control using Gaussian standard deviation and gradient-based binning
Rudnaya et al. A derivative-based fast autofocus method in electron microscopy
Hao et al. Improving the performances of autofocus based on adaptive retina-like sampling model
Xu et al. Robust passive autofocus system for mobile phone camera applications
Ghosh et al. Passive auto focusing of pathological microscope with intelligent field image collection mechanism
Mahmood et al. 3D shape recovery from image focus using kernel regression in eigenspace
Muhammad et al. A novel method for shape from focus in microscopy using Bezier surface approximation
Sha et al. A fast autofocus sharpness function of microvision system based on the Robert function and Gauss fitting
Shajkofci et al. DeepFocus: a few-shot microscope slide auto-focus using a sample invariant CNN-based sharpness function
Mahmood et al. 3D shape recovery from image focus using Gabor features
Bezzubik et al. Optimization of algorithms for autofocusing a digital microscope
KR102104238B1 (en) Structure illumination microscope system based on light modulator and method for generating image performed by the same
Zhou et al. A real-time continuous auto-focus algorithm for stereo microscope cameras
Mahmood et al. 3D shape recovery from image focus using gray level co-occurrence matrix
Chan et al. Modeling phase shift data of phase-detection autofocus by skew-normal distribution
Sripolsaen et al. A high speed autofocusing system for micro system applications