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US 12,676,957 B2Granted
Image sensor and operating method of image sensor
AssigneeSamsung Electronics Co., Ltd.
InventorsJeisung Lee, Hansol Lee
Life of this patent
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Abstract
Provided are an image sensor and an operating method of the image sensor. The image sensor includes a pixel array configured to convert optical signals that are received, into electrical signals, a readout circuit configured to convert the electrical signals into image data and to output the image data, and a bad-pixel correction circuit configured to correct a cluster bad pixel included in the image data based on a neural network without performing a convolution operation.
Claims20
An image sensor comprising:
- a pixel array configured to convert optical signals into electrical signals;
- a readout circuit configured to convert the electrical signals into image data and output the image data;
- and
- a bad-pixel correction circuit configured to correct a cluster bad pixel included in the image data based on a neural network without performing a convolution operation, the neural network comprising a plurality of fully connected layers connected to each other and receiving a flattened one dimensional N1×1 matrix as an input,
- wherein a first fully connected layer, among the plurality of fully connected layers, is configured to:
- receive the flattened one dimensional N1×1 matrix,
- generate an one dimensional N2×1 matrix based on the flattened one dimensional N1×1 matrix and a first kernel, and
- output the one dimensional N2×1 matrix to a second fully connected layer, among the plurality of fully connected layers,
- wherein N1 and N2 are integers.
6 more elements
An image sensor comprising:
- a pixel array configured to convert optical signals into electrical signals;
- a readout circuit configured to convert the electrical signals into image data and output the image data, the image data comprising a plurality of pixel groups each comprising pixels of a same color arranged in an N×N matrix, and N being an integer of 2 or more;
- and
- an image signal processor configured to correct a cluster bad pixel occurring in at least one of the plurality of pixel groups based on a neural network without including a convolutional layer,
- wherein the neural network comprises a plurality of fully connected layers connected to each other and receiving a flattened one dimensional N1×1 matrix as an input,
- wherein a first fully connected layer, among the plurality of fully connected layers, is configured to:
- receive the flattened one dimensional N1×1 matrix,
- generate an one dimensional N2×1 matrix based on the flattened one dimensional N1×1 matrix and a first kernel, and
- output the one dimensional N2×1 matrix to a second fully connected layer, among the plurality of fully connected layers,
- wherein N1 and N2 are integers.
7 more elements
An operating method of an image sensor, the operating method comprising:
- generating image data based on an optical signal;
- detecting a cluster bad pixel in the image data;
- generating corrected pixel data, by operating a neural network without including a convolutional layer, based on input data comprising the cluster bad pixel and pixels around the cluster bad pixel;
- and
- correcting the cluster bad pixel based on the corrected pixel data,
- wherein the neural network comprises a plurality of fully connected layers connected to each other and receiving a flattened one dimensional N1×1 matrix as an input, and
- wherein the method further comprises:
- by a first fully connected layer, among the plurality of fully connected layers:
- receiving the flattened one dimensional N1×1 matrix,
- generating an one dimensional N2×1 matrix based on the flattened one dimensional N1×1 matrix and a first kernel, and
- outputting the one dimensional N2×1 matrix to a second fully connected layer, among the plurality of fully connected layers,
- wherein N1 and N2 are integers.
9 more elements
Dependencies are inferred from the claim text.