Patents by Inventor Yan Chang

Yan Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9344629
    Abstract: The present invention discloses a method of capturing images and an image capturing device using the method. The image capturing device has a first lens module and a second lens module having a view angle which is smaller than that of the first lens module. The method comprises: increasing an exposure time and reducing a light sensitivity value of the first lens module and capturing a first image by using the first lens module; reducing the exposure time and increasing the light sensitivity value of the first lens module and capturing a second image by using the second lens module; extracting a plurality of image features from the first image and the second image respectively and determining a region corresponding to the second image in the first image; and merging the second image into the region in the first image to generate an output image.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: May 17, 2016
    Assignee: ALTEK SEMICONDUCTOR CORPORATION
    Inventors: Wen-Yan Chang, Hong-Long Chou, Yi-Hong Tseng, Tsan-Wei Wang, Che-Lun Chuang
  • Patent number: 9325899
    Abstract: An image capturing device and a digital zooming method thereof are proposed in the invention. The method includes the following steps. A scene is captured by a primary lens and a secondary lens to generate a primary image and a secondary image. Image rectification is then performed on the primary and the secondary images to obtain two corresponding rectified images. Feature points detected and matched from the two rectified images are used to determine a corresponding overlapping region, respectively. Pixel displacement and depth map in the two overlapping regions could be calculated and estimated. Image zooming and warping techniques are performed on the two rectified images to obtain corresponding warped images using a recalculated homography matrix according to each specific zooming factor. Finally, the two overlapping regions in the warped image are fused by a weighted blending approach to generate a digital zoomed image.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: April 26, 2016
    Assignee: Altek Semiconductor Corp.
    Inventors: Hong-Long Chou, Yi-Hong Tseng, Wen-Yan Chang, Yu-Chih Wang, Tsan-Wei Wang, Yi-Yi Yu
  • Publication number: 20160105615
    Abstract: An image processing system and a method for object-tracing are provided. The method includes: receiving a first wide field of view image and a first narrow field of view image, and determining a to-be-traced object therefrom and choosing one image therefrom for serving as a first output image; using an area size of the to-be-traced object in the first output image as a reference area; comparing the reference area with the area sizes of the to-be-traced object from a second wide field of view image and a second narrow field of view image respectively so as to determine one of that as a main image, and respectively zooming and deforming the main image and an area corresponding to the other image, and then fusing a zoomed and deformed second image as a second output image.
    Type: Application
    Filed: November 24, 2014
    Publication date: April 14, 2016
    Inventors: Wen-Yan CHANG, Hong-Long CHOU, Yi-Hong TSENG, Tsan-Wei WANG, Che-Lun CHUANG
  • Publication number: 20160093032
    Abstract: An image capturing device and a method for generating a bokeh effect are provided. The method includes the following steps. An image including a current input pixel is captured. Next, blurring processes are performed on the image by using a first image blur filter and a second image blur filter so as to generate a plurality of first blur images and second blur images corresponding to different blur levels. A distance between the current input pixel and a focal plane is calculated to obtain a current distance. A first current blur image and a second current blur image are respectively selected from the first blur images and the second blur images according to the current distance. Next, a first current blur pixel of the first current blur image and a second current blur pixel of the second current blur image are combined to generate a current output pixel.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 31, 2016
    Inventors: Su Ian Alias Eugene Lei, Kaiyu Tseng, Wen-Yan Chang
  • Publication number: 20160080654
    Abstract: The present invention discloses a method of capturing images and an image capturing device using the method. The image capturing device has a first lens module and a second lens module having a view angle which is smaller than that of the first lens module. The method comprises: increasing an exposure time and reducing a light sensitivity value of the first lens module and capturing a first image by using the first lens module; reducing the exposure time and increasing the light sensitivity value of the first lens module and capturing a second image by using the second lens module; extracting a plurality of image features from the first image and the second image respectively and determining a region corresponding to the second image in the first image; and merging the second image into the region in the first image to generate an output image.
    Type: Application
    Filed: October 27, 2014
    Publication date: March 17, 2016
    Inventors: Wen-Yan CHANG, Hong-Long CHOU, Yi-Hong TSENG, Tsan-Wei WANG, Che-Lun CHUANG
  • Publication number: 20160080657
    Abstract: The present invention discloses an image capturing device and a digital zoom method. The image capturing device comprises a first lens module, a second lens module, a feature extraction unit, an image zooming-deformation unit and an image merging unit. The first lens module and the second lens module are applied to capture a first image and a second image, respectively. The feature extraction unit extracts a plurality of first image features and second image features from the first image and the second image, respectively, and generating pixel offset characteristics. Based on a zoom factor and the pixel offset characteristics, the image zooming-deformation unit zooms and deforms the first and second images to generate a third image and a fourth image. The image merging unit bases the zoom factor to merge the third image and the fourth image for obtaining a combined image.
    Type: Application
    Filed: October 29, 2014
    Publication date: March 17, 2016
    Inventors: Hong-Long CHOU, Yi-Hong TSENG, Yu-Chih WANG, Che- Lun CHUANG, Chia-Chun TSENG, Tai-Chang YANG, Wen-Yan CHANG, Tsan-Wei WANG
  • Patent number: 9225909
    Abstract: An image capturing device and a digital zoom display method are provided. The device includes two lens modules configured to respectively capture a first image and a second image, and their capturing view fields are substantially identical, a preview processing unit configured to generate a third image by down-sampling the first image according to a display unit's resolution, a feature extraction unit, an image zooming and distortion unit and an image fusing unit. The second image is trimmed for generating a fourth image according to the same size of the third image. A pixel offset feature corresponding with the third and fourth images is generated by the feature extraction unit. The image zooming and distortion unit generates a fifth image and a sixth image according to the pixel offset feature and zoom ratio to the image fusing unit to generate a combined image displayed on the display unit.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: December 29, 2015
    Assignee: ALTEK SEMICONDUCTOR CORPORATION
    Inventors: Hong-Long Chou, Yi-Hong Tseng, Wen-Yan Chang, Yu-Chih Wang, Chia-Chun Tseng, Tai-Chang Yang, Che-Lun Chuang, Tsan-Wei Wang
  • Patent number: 9210303
    Abstract: The present disclosure illustrates a lens distortion correction method to solve influence for distortion correction caused by an alignment error between a lens center and a center of image sensor unit during assembling. The present disclosure is characterized in that the spatial geometric calibration is incorporated with the lens distortion correction and different image centers are selected repeatedly when transformation relationship of image coordinates is used to perform the lens distortion correction, so as to correct the image center of the image to be corrected and enhance the accuracy of lens distortion correction.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: December 8, 2015
    Assignee: ALTEK SEMICONDUCTOR CORPORATION
    Inventors: Hong-Long Chou, Yu-Chih Wang, Wen-Yan Chang, Yao-Sheng Wang
  • Publication number: 20150319421
    Abstract: Method and apparatus for optimizing depth information are provided. One of a left image and a right image is divided into a plurality of segmentations for obtaining a plurality of segmentation maps. A necessary repair depth map is obtained, and the necessary repair depth map is partitioned into a plurality of depth planes according to a plurality of primary depth values and a camera parameter. The primary depth values are recorded in the necessary repair depth map having a plurality of holes. A plurality of optimized depth values are respectively generated for the holes in each of the depth planes by using the segmentation maps, and the optimized depth values are filled into the depth planes to obtain an optimized depth map.
    Type: Application
    Filed: June 16, 2014
    Publication date: November 5, 2015
    Inventors: Yu-Chia Chung, Wen-Yan Chang, Chia-Chun Tseng, Yun-Chin Lee
  • Publication number: 20150304527
    Abstract: The present disclosure illustrates a lens distortion correction method to solve influence for distortion correction caused by an alignment error between a lens center and a center of image sensor unit during assembling. The present disclosure is characterized in that the spatial geometric calibration is incorporated with the lens distortion correction and different image centers are selected repeatedly when transformation relationship of image coordinates id used to perform the lens distortion correction, so as to correct the image center of the image to be corrected and enhance the accuracy of lens distortion correction.
    Type: Application
    Filed: June 3, 2014
    Publication date: October 22, 2015
    Applicant: Altek Semiconductor Corporation
    Inventors: Hong-Long CHOU, Yu-Chih WANG, Wen-Yan CHANG, Yao-Sheng WANG
  • Publication number: 20150292873
    Abstract: An image capture device, a depth generating device and a method thereof are disclosed. The present disclosure is characterized in that a depth calculation technology with a structure light projection and a pictorial depth calculation technology are combined to better both of resolution and accuracy of the calculated image depth. In addition, the utilization of a modified flashlight enables the combination of the two technologies to be applied to a hand-held capture device.
    Type: Application
    Filed: May 30, 2014
    Publication date: October 15, 2015
    Applicant: Altek Semiconductor Corporation
    Inventors: Hong-Long CHOU, Wen-Yan CHANG, Yu-Chih WANG
  • Publication number: 20150270857
    Abstract: Embodiments of the present invention provide a method and an apparatus for eliminating interference among transmission channels of a transmitter. The method includes: generating a compensation parameter according to an output signal of an analog module on a transmission channel to be processed by the transmitter and an input signal of a digital module on each transmission channel among all transmission channels of the transmitter; generating a cancellation signal according to the compensation parameter and an input or output signal of a digital module on another transmission channel except for the transmission channel to be processed; and performing, according to the cancellation signal, interference elimination processing on the transmission channel to be processed. The method and apparatus according to the embodiments of the present invention avoid an increase of a transmitter product size, and improve an effect of eliminating interference among transmission channels.
    Type: Application
    Filed: June 9, 2015
    Publication date: September 24, 2015
    Inventors: Xingwen Li, Siqing Ye, Yongsheng Wang, Yan Chang
  • Patent number: 9100584
    Abstract: The present disclosure illustrates a camera array correction method. The method comprises steps of calculating the gain values between the images captured by cameras with the pre-measured characteristic of each of the cameras. By such correction method, the different cameras in the camera array can capture images of the same brightness values and color values simultaneously. In addition, the huge computation requirement due to the increasing of the cameras can be reduced effectively.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: August 4, 2015
    Assignee: ALTEK SEMICONDUCTOR CORPORATION
    Inventors: Hsin-Te Wang, Kai-Yu Tseng, Wen-Yan Chang
  • Publication number: 20150201182
    Abstract: An auto focus (AF) method adapted to an AF apparatus is provided. The AF method includes following steps. A first image is captured by using the first image sensor. At least one characteristic is detected based on the first image, and whether the characteristic meets a predetermined condition is determined. If the characteristic meets the predetermined condition, a focus depth is calculated according to a three-dimensional (3D) depth information and movement of a first lens of the first sensor is driven according to the focus depth for focusing. If the characteristic does not meet the predetermined condition, the first lens is driven to move for many times to obtain a plurality of contrast values, such that movement of the first lens is driven according to the contrast values for focusing. Additionally, an AF apparatus is provided.
    Type: Application
    Filed: March 27, 2015
    Publication date: July 16, 2015
    Inventors: Wen-Yan Chang, Yu-Chen Huang, Hong-Long Chou, Chung-Chia Kang, Shan-Lung Chao
  • Patent number: 9053368
    Abstract: An image transfer apparatus and a method thereof comprise: capturing at least one first image, wherein the first image includes at least one face image; performing a face detection to obtain at least one face feature; a database has at least one identification information which comprises at least one face photo and a corresponding communication information; comparing the face feature with the face photo saved in the database; retrieving the corresponding communication information and the identification information corresponding to the face photo, if the face feature matches the face photo; performing the face image processing corresponding to the identification information in the first image, so as to obtain at least one second image; transmitting each second image according to the communication information of the processed face image in the second image.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: June 9, 2015
    Assignee: Altek Corporation
    Inventors: Hong-Long Chou, Wen-Yan Chang, Tai-Chang Yang
  • Publication number: 20150139833
    Abstract: A thin-profile cross-flow fan with air volume gain effect has a thin-profile casing, a cross-flow guide passage, a blade assembly, an auxiliary guide ring portion, an axial magnetic motor and a radial flow-through auxiliary guide portion. When the thin-profile cross-flow fan is operated, the air stream guided from the air inlet can be guided to the air outlet through the circulation space or the auxiliary guide ring portion and radial flow-through the auxiliary guide portion, thus increasing the an flux and volume of the thin-profile cross-flow fan and also improving greatly its gain effect and performance with better applicability and industrial benefits.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 21, 2015
    Applicant: FORCECON TECHNOLOGY CO., LTD.
    Inventors: Sin-Wei He, Chih-Ren Huang, Jhong-Yan Chang
  • Publication number: 20150133399
    Abstract: The present invention is directed to methods and compositions for augmenting treatment of cancers and other proliferative disorders. In particular embodiments, the invention combines the administration of an agent that inhibits the anti-apoptotic activity of galectin-3 (e.g., a “galectin-3 inhibitor”) so as to potentiate the toxicity of a chemotherapeutic agent. In certain preferred embodiments, the conjoint therapies of the present invention can be used to improve the efficacy of those chemotherapeutic agents whose cytotoxicity is influenced by the status of an anti-apoptotic Bcl-2 protein for the treated cell. For instance, galectin-3 inhibitors can be administered in combination with a chemotherapeutic agent that interferes with DNA replication fidelity or cell-cycle progression of cells undergoing unwanted proliferation.
    Type: Application
    Filed: December 18, 2014
    Publication date: May 14, 2015
    Inventors: Yan Chang, Vodek Sasak
  • Publication number: 20150114608
    Abstract: An electrostatic air-cooled heat sink has a frame, a power controller, a sharp electrode with a sharp electrode portion, a through-hole, a guide frame, a half-bowl blunt electrode assembly and flow-through portion. The electrostatic air-cooled heat sink features a simple and lightweight structure, making it suitable for mass production and beat radiation with better applicability and industrial benefits.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Applicant: FORCECON TECHNOLOGY CO., LTD.
    Inventors: Sin-Wei He, Jhong-Yan Chang, Chih-Ren Huang
  • Patent number: 9019379
    Abstract: The present invention discloses a license plate image-pickup device and an image exposure adjustment method thereof. The license plate image-pickup device comprises an image-sensing module, a recognition module and a processing module. The license plate image-pickup device takes a scene. The image-sensing module senses the scene to produce an image. The recognition module detects a vehicle object. The processing module adjusts the exposure of the vehicle object to produce an exposure adjusted vehicle object, and then the recognition module detects a license plate object from the exposure adjusted vehicle object, and the processing module adjusts the exposure of the license plate object.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: April 28, 2015
    Assignee: Altek Corporation
    Inventors: Wen-Yan Chang, Tai-Chang Yang, Chia-Chun Hsieh, Shan-Lung Chao, Hsin-Te Wang, Hong-Long Chou
  • Publication number: 20150090536
    Abstract: A touch-free control device for an elevator being applicable for an electronically controlled machine of an elevator and contains: a control panel, at least one distance sensor, a microprocessor, and a servo unit. The control panel includes a plurality of keys equidistantly arranged thereon to display a floor direction or a floor number. Each distance sensor is fixed on the control panel to correspond to the plurality of keys, a distance of the sensing signal is parallel to a position of the plurality of keys, and a starting position of the sensing signal of the one distance sensor and a distance between any two keys are used to determine one of the plurality of keys selected by a user. The microprocessor is disposed on the servo unit and is electrically connected with the one distance sensor.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 2, 2015
    Inventor: Yan-Chang CHEN