公开(公告)号：US20100073528A1

公开(公告)日：2010-03-25

申请号：US12236492

申请日：2008-09-23

申请人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang ,  Tsung-Chien Wu

发明人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang ,  Tsung-Chien Wu

IPC分类号： H04N5/52 ,  H04N5/20

CPC分类号： H04N5/365 ,  H04N5/243

摘要： A method of generating a gain of an image frame according to a look up table of gain which is set up based on luminance sensitivity of human eyes is proposed. The method includes setting a gain of an image frame to 1, scanning images of a plurality of front rows of the image frame, averaging the images of the plurality of the front rows of the image frame to generate an average value of the images of the plurality of the front rows of the image frame, finding a gain from the look up table of gain according to the average value of the images of the plurality of the front rows of the image frame, and adjusting remaining rows of the image frame according to the gain to generate images of the remaining rows of the image frame.

摘要翻译： 提出了根据基于人眼的亮度灵敏度设置的增益查找表生成图像帧的增益的方法。 该方法包括将图像帧的增益设置为1，扫描图像帧的多个前排的图像，对图像帧的多个前行的图像进行平均，以生成图像的图像的平均值 多个图像帧的前排，根据图像帧的多个前排的图像的平均值，从增益的查找表中找到增益，并根据图像帧的剩余行调整 生成图像帧的剩余行的图像的增益。

公开(公告)号：US08159557B2

公开(公告)日：2012-04-17

申请号：US12236492

申请日：2008-09-23

申请人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang ,  Tsung-Chien Wu

发明人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang ,  Tsung-Chien Wu

IPC分类号： H04N5/235

CPC分类号： H04N5/365 ,  H04N5/243

摘要： A method of generating a gain of an image frame according to a look up table of gain which is set up based on luminance sensitivity of human eyes is proposed. The method includes setting a gain of an image frame to 1, scanning images of a plurality of front rows of the image frame, averaging the images of the plurality of the front rows of the image frame to generate an average value of the images of the plurality of the front rows of the image frame, finding a gain from the look up table of gain according to the average value of the images of the plurality of the front rows of the image frame, and adjusting remaining rows of the image frame according to the gain to generate images of the remaining rows of the image frame.

摘要翻译： 提出了根据基于人眼的亮度灵敏度设置的增益查找表生成图像帧的增益的方法。 该方法包括将图像帧的增益设置为1，扫描图像帧的多个前排的图像，对图像帧的多个前行的图像进行平均，以生成图像的图像的平均值 多个图像帧的前排，根据图像帧的多个前排的图像的平均值，从增益的查找表中找到增益，并根据图像帧的剩余行调整 生成图像帧的剩余行的图像的增益。

公开(公告)号：US08009212B2

公开(公告)日：2011-08-30

申请号：US12237403

申请日：2008-09-25

申请人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang

发明人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang

IPC分类号： H04N3/14 ,  H04N5/335

CPC分类号： H04N5/3742 ,  H04N5/365 ,  H04N5/378

摘要： Circuitry for reducing fixed pattern noise in an image processing system with a 4-T (4 transistors) pixel and a method thereof is proposed. The image processing system includes two voltage sources, two current sources, a 4-T pixel, a second portion of a linearized source follower, a ping pong memory, a PGA, and auto-zero circuitry. By coupling the auto-zero circuitry to the PGA, an open loop is formed to clamp the output of an op amp of the PGA to a stable reference when resetting the PGA so as to remove DC offsets at the output terminal of the op amp.

摘要翻译： 提出了一种用于降低具有4-T（4晶体管）像素的图像处理系统中的固定模式噪声的电路及其方法。 图像处理系统包括两个电压源，两个电流源，4-T像素，线性化源极跟随器的第二部分，乒乓存储器，PGA和自动归零电路。 通过将自动归零电路耦合到PGA，形成开环，以在复位PGA时将PGA的运算放大器的输出钳位到稳定的参考电压，以便去除运放的输出端子处的直流偏移。

公开(公告)号：US20100073525A1

公开(公告)日：2010-03-25

申请号：US12237403

申请日：2008-09-25

申请人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang

发明人： Yuan-Che Lee ,  Jhy-Jyi Sze ,  Chiao-Fu Chang

IPC分类号： H04N5/21

CPC分类号： H04N5/3742 ,  H04N5/365 ,  H04N5/378

摘要： Circuitry for reducing fixed pattern noise in an image processing system with a 4-T (4 transistors) pixel and a method thereof is proposed. The image processing system includes two voltage sources, two current sources, a 4-T pixel, a second portion of a linearized source follower, a ping pong memory, a PGA, and auto-zero circuitry. By coupling the auto-zero circuitry to the PGA, an open loop is formed to clamp the output of an op amp of the PGA to a stable reference when resetting the PGA so as to remove DC offsets at the output terminal of the op amp.

摘要翻译： 提出了一种用于降低具有4-T（4晶体管）像素的图像处理系统中的固定模式噪声的电路及其方法。 图像处理系统包括两个电压源，两个电流源，4-T像素，线性化源极跟随器的第二部分，乒乓存储器，PGA和自动归零电路。 通过将自动归零电路耦合到PGA，形成开环，以在复位PGA时将PGA的运算放大器的输出钳位到稳定的参考电压，以便去除运放的输出端子处的直流偏移。