问题：1.感觉图像采集速率不够快每秒2帧左右 请问 DCMI DMA这两个环节的传输速率是多少 是串口速率导致的整体速度慢吗
2.图像数据通过串口发送到上位机总报异常（上位机用Java写的）
javax.imageio.IIOException: Bogus marker length
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImageHeader(Native Method)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readNativeHeader(JPEGImageReader.java:620)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.checkTablesOnly(JPEGImageReader.java:347)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.gotoImage(JPEGImageReader.java:492)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readHeader(JPEGImageReader.java:613)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:1070)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:1050)
at javax.imageio.ImageIO.read(ImageIO.java:1448)
at javax.imageio.ImageIO.read(ImageIO.java:1352)
at serialPort.DataView.exchangeImage(DataView.java:419)
at serialPort.DataView$SerialListener.serialEvent(DataView.java:364)
at gnu.io.RXTXPort.sendEvent(RXTXPort.java:772)
at gnu.io.RXTXPort.eventLoop(Native Method)
at gnu.io.RXTXPort$MonitorThread.run(RXTXPort.java:1641)
javax.imageio.IIOException: Huffman table 0x00 was not defined
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImage(Native Method)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:1247)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:1050)
at javax.imageio.ImageIO.read(ImageIO.java:1448)
at javax.imageio.ImageIO.read(ImageIO.java:1352)
at serialPort.DataView.exchangeImage(DataView.java:419)
at serialPort.DataView$SerialListener.serialEvent(DataView.java:364)
at gnu.io.RXTXPort.sendEvent(RXTXPort.java:772)
at gnu.io.RXTXPort.eventLoop(Native Method)
at gnu.io.RXTXPort$MonitorThread.run(RXTXPort.java:1641)
javax.imageio.IIOException: Invalid JPEG file structure: two SOI markers
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImage(Native Method)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:1247)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:1050)
at javax.imageio.ImageIO.read(ImageIO.java:1448)
at javax.imageio.ImageIO.read(ImageIO.java:1352)
at serialPort.DataView.exchangeImage(DataView.java:419)
at serialPort.DataView$SerialListener.serialEvent(DataView.java:364)
at gnu.io.RXTXPort.sendEvent(RXTXPort.java:772)
at gnu.io.RXTXPort.eventLoop(Native Method)
at gnu.io.RXTXPort$MonitorThread.run(RXTXPort.java:1641)
javax.imageio.IIOException: Huffman table 0x00 was not defined
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImage(Native Method)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:1247)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:1050)
at javax.imageio.ImageIO.read(ImageIO.java:1448)
at javax.imageio.ImageIO.read(ImageIO.java:1352)
at serialPort.DataView.exchangeImage(DataView.java:419)
at serialPort.DataView$SerialListener.serialEvent(DataView.java:364)
at gnu.io.RXTXPort.sendEvent(RXTXPort.java:772)
at gnu.io.RXTXPort.eventLoop(Native Method)
at gnu.io.RXTXPort$MonitorThread.run(RXTXPort.java:1641) |
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