我试图根据CSV文件中给出的坐标从CT图像中提取结节斑块。我一直在worldcoord行得到这个错误信息:无法将字符串转换为浮点数(CordZ)。我不太清楚该怎么做。
到目前为止我有这个:
def readCSV(filename):
def readCSV(filename): lines = []
with open(filename, 'r') as f:
csvreader = csv.reader(f)
for line in csvreader:
lines.append(line)
return lines
cands = readCSV(cand_path)
for cand in cands:
worldCoord = np.asarray([float(cand[3]),float(cand[2]),float(cand[1])])
voxelCoord = worldToVoxelCoord(worldCoord, numpyOrigin, numpySpacing)
voxelWidth = 65
patch = numpyImage[voxelCoord[0],voxelCoord[1]-voxelWidth/2:voxelCoord[1]+voxelWidth/2,voxelCoord[2]-voxelWidth/2:voxelCoord[2]+voxelWidth/2]
patch = normalizePlanes(patch)
print ('data')
print (worldCoord)
print (voxelCoord)
我还必须指定CSV文件的行号。所以我做了:
for cand in cands[1:]
“只有整数,切片(:),省略号(...),numpy.newaxis(无)和整数或布尔数组的解决方案是有效索引”
更改,
patch = numpyImage [voxelCoord[0],voxelCoord[1]- voxelWidth/2:voxelCoord[1]+voxelWidth/2,voxelCoord[2]-voxelWidth/2:voxelCoord[2]+voxelWidth/2]
至,
patch = numpyImage [int(voxelCoord[0]),int(voxelCoord[1])- int(voxelWidth/2):int(voxelCoord[1])+int(voxelWidth/2),int(voxelCoord[2])-int(voxelWidth/2):int(voxelCoord[2])+int(voxelWidth/2)]